Overview

• Full name: Kenneth John Beltram
• Age at disappearance: 25
• Date of birth: March 21, 1952
• Date last reportedly seen: July 17, 1977, by his brother
• Recorded missing-person date: July 29, 1977
• Location associated with disappearance: Brentwood, Contra Costa County, California
• Other relevant locations: Oakley and the reported destination of Hogg Island
• Case classification: Endangered Missing
• Current publicly documented status: Missing; unresolved
• Investigating agency: Contra Costa County Sheriff’s Office
• Associated missing persons: Evangeline Rodriguez Silva, 19, and Rebecca Rodriguez, 16
• Key circumstances: Beltram was with the two women on July 16, 1977. His brother reportedly saw him the following morning without them. Later that month, friends reportedly observed his missing vehicle being driven by an unidentified man.

Important date distinction: The Charley Project records July 29, 1977, as Beltram’s missing date but describes a reported sighting by his brother on July 17. The July 16 date is associated with the last reported sighting of the three together. These dates should not be treated as interchangeable.

Detailed Case Breakdown

Kenneth John Beltram: The Unsolved 1977 Disappearance of Three People in Brentwood, California

In July 1977, 25-year-old Kenneth John Beltram disappeared in Contra Costa County, California, in a case involving two young women, a missing Chevrolet, and a series of unanswered questions that have endured for nearly five decades.

Beltram was last reported in the company of his 19-year-old girlfriend, Evangeline Rodriguez Silva, and her 16-year-old sister, Rebecca Rodriguez, at Brentwood Park. The three reportedly discussed traveling to Hogg Island or returning home to Oakley, California. Neither woman was seen again, and Beltram also vanished.

The circumstances became particularly troubling when friends reportedly spotted Beltram’s vehicle later that month, driven by an unidentified man. The vehicle subsequently disappeared as well.

The case remains documented as an endangered missing-person investigation, not a confirmed homicide. Although the circumstances raise serious concerns about possible foul play, publicly available evidence does not establish what happened to Beltram, Silva, or Rodriguez.

Sources: The Charley Project — Kenneth John Beltram and The Charley Project — Rebecca Rodriguez.

Case Summary

• Full name: Kenneth John Beltram
• Age at disappearance: 25
• Date of birth: March 21, 1952
• Date last reportedly seen: July 17, 1977, by his brother
• Recorded missing-person date: July 29, 1977
• Location associated with disappearance: Brentwood, Contra Costa County, California
• Other relevant locations: Oakley and the reported destination of Hogg Island
• Case classification: Endangered Missing
• Current publicly documented status: Missing; unresolved
• Investigating agency: Contra Costa County Sheriff’s Office
• Associated missing persons: Evangeline Rodriguez Silva, 19, and Rebecca Rodriguez, 16
• Key circumstances: Beltram was with the two women on July 16, 1977. His brother reportedly saw him the following morning without them. Later that month, friends reportedly observed his missing vehicle being driven by an unidentified man.

Important date distinction: The Charley Project records July 29, 1977, as Beltram’s missing date but describes a reported sighting by his brother on July 17. The July 16 date is associated with the last reported sighting of the three together. These dates should not be treated as interchangeable.

Source: Kenneth Beltram Case Profile.

Background: Who Was Kenneth John Beltram?

Kenneth John Beltram was born on March 21, 1952. He was 25 years old when he disappeared from the Brentwood area of Northern California in 1977.

According to his missing-person profile, Beltram was approximately 5 feet 6 inches tall and weighed 155 pounds. He had brown hair and brown eyes and wore his hair in a ponytail around the time of his disappearance.

His girlfriend was Evangeline Rodriguez Silva, also known by the nickname “Bungy.” She was 19 years old. Her younger sister, Rebecca Rodriguez, known as “Becky,” was 16.

The three were together shortly before their disappearances, making their cases closely connected.

Publicly accessible case summaries provide limited information about Beltram’s employment, education, childhood, or daily routine. Those details should not be assumed or reconstructed without reliable documentation.

What is established is that Beltram had personal connections in the Brentwood and Oakley area, and his disappearance became part of a larger mystery involving two members of the same family.

The relationship among the three missing individuals is central to understanding the case. Investigators and anyone reviewing the available evidence must consider not only Beltram’s movements but also the last known activities of Silva and Rodriguez.

Source: The Charley Project.

July 16, 1977: The Last Evening Together

On the evening of July 16, 1977, Beltram, Silva, and Rodriguez were reportedly at Brentwood Park in Brentwood, California.

According to published missing-person accounts, the three indicated that they were planning to go either to Hogg Island or to their home area of Oakley.

The two women were last seen getting into Beltram’s vehicle with him.

That moment represents the last reported sighting of Silva and Rodriguez.

Beltram’s subsequent movements are less clear. His brother reportedly saw him the next morning, July 17, without either woman.

This detail is particularly important because it suggests that Beltram may have been seen after the sisters disappeared from public view.

However, the available accounts do not explain where Beltram had been overnight, where he was when his brother saw him, or whether he provided any information about the sisters.

There is also no publicly verified explanation for why the three individuals were no longer together.

The brother’s reported sighting is part of the published case narrative, but the underlying witness statement has not been independently reviewed for this article.

Source: Rebecca Rodriguez Case Profile.

The Missing Chevrolet

One of the most distinctive aspects of the investigation is the disappearance of Beltram’s automobile.

The vehicle was described as a pearl-white 1960 Chevrolet with several identifiable features:

• California license plate CCJ 775
• Mag-style wheels
• A large dent in the tailgate door
• Pearl-white exterior

In late July 1977, nearly two weeks after the three were together at Brentwood Park, friends of Beltram reportedly observed his Chevrolet being driven by an unidentified white man.

According to the case accounts, they attempted to catch up with the vehicle but were unsuccessful.

A separate case summary published by Uncovered places the reported vehicle sighting in Concord, California.

The driver was not publicly identified in the sources reviewed, and the vehicle has not been reported recovered.

The sighting is a potentially important investigative lead because it suggests that someone may have possessed or operated Beltram’s automobile after the disappearances.

However, the sighting does not independently establish that the driver was involved in a crime. There is no publicly verified evidence identifying the driver or explaining how the vehicle came into his possession.

Sources: The Charley Project and Uncovered — Rebecca Rodriguez.

Investigation History and Available Evidence

Three connected missing-person cases

The disappearance of Kenneth Beltram cannot be fully examined without considering Evangeline Silva and Rebecca Rodriguez.

The three were last known to have been together on July 16, 1977. The sisters subsequently disappeared, while Beltram was reportedly seen once more.

The Charley Project classifies Beltram and Rebecca as endangered missing persons and describes the circumstances as suspicious.

The available public summaries do not establish that any of the three voluntarily disappeared, nor do they confirm that they were victims of homicide.

There is also no substantiated evidence in the reviewed sources that Silva and Rodriguez traveled to Mexico, despite having relatives there.

The absence of a confirmed destination leaves their intended journey to Hogg Island or Oakley as an unresolved part of the case.

Witness information

Two reported observations stand out in the public record.

The first is the account that Beltram’s brother saw him on July 17, 1977, without the sisters.

The second is the late-July observation of Beltram’s Chevrolet being driven by an unidentified man.

These accounts are significant, but neither provides a complete explanation of the disappearances.

The public sources reviewed do not provide full witness interviews, contemporaneous police transcripts, or a verified description of the unidentified driver’s identity beyond the general description in the case summaries.

Physical and forensic evidence

The Chevrolet remains a potentially significant item of missing physical evidence.

If it were located, investigators could evaluate whether its condition, identifying features, or surviving materials provided useful information. However, after so many decades, the availability and forensic value of any recovered evidence would be uncertain.

No publicly confirmed recovery of Beltram’s Chevrolet was identified in the reviewed sources.

Likewise, the available case information does not establish that investigators recovered biological evidence, weapons, personal belongings, or other physical material connected to a criminal act.

No publicly documented DNA match, forensic identification, or genetic-genealogy breakthrough was verified.

That does not prove that investigators possess no evidence. It means the publicly accessible sources do not provide a reliable basis for describing such evidence.

Searches and investigative activity

The Contra Costa County Sheriff’s Department is identified by The Charley Project as the investigating agency.

However, publicly available case summaries contain little detail about the original search operations, interviews, investigative decisions, or subsequent cold-case reviews.

Specific claims about searches of waterways, searches of Hogg Island, vehicle recovery operations, or forensic examinations cannot be made without supporting documentation.

The distinction matters: an investigation may have involved activities that were never publicly reported, but those activities cannot be presented as established facts.

Source: Kenneth John Beltram — Case Details.

Theories and Unresolved Questions

Several possibilities arise from the circumstances, but none should be mistaken for an established investigative conclusion.

Could the disappearances involve foul play?

The disappearance of three people who were last known to be together, followed by the reported sighting of Beltram’s automobile in another person’s possession, raises reasonable questions about whether a crime occurred.

Nevertheless, no publicly confirmed homicide determination, named suspect, or criminal charge was identified in the reviewed case materials.

The available evidence does not establish whether the three disappeared together, separately, voluntarily, or as the result of criminal conduct.

What happened between July 16 and July 17?

The reported sighting of Beltram by his brother is one of the most important unresolved details.

If accurate, it establishes a potentially significant period during which Beltram’s whereabouts and activities remain publicly unexplained.

Questions include whether he knew where the sisters were, whether he had returned from an intended destination, and whether he subsequently encountered someone connected to his own disappearance.

These are questions, not accusations or verified findings.

Who was driving Beltram’s car?

The unidentified man reportedly seen driving the Chevrolet in late July 1977 remains a major unanswered question.

It is unknown whether he had permission to use the vehicle, whether he knew Beltram, or whether he possessed information about the missing individuals.

The available sources do not establish that this person was a suspect or person of interest officially identified by law enforcement.

Could the intended destination provide answers?

Hogg Island and Oakley are relevant because they were mentioned as possible destinations on July 16.

The published accounts do not establish which destination, if either, the three actually reached.

Any suggestion that the vehicle entered a waterway, that an accident occurred, or that the group encountered a particular person along the route remains speculative without supporting evidence.

Why have no definitive answers emerged?

The passage of time creates difficulties for any missing-person investigation.

Witness memories can fade, physical evidence can deteriorate, and records from the 1970s may be incomplete or difficult to locate.

Still, these general challenges should not be confused with documented explanations for the outcome of this particular investigation.

The central unresolved questions remain the whereabouts of the three missing individuals, the identity of the reported vehicle driver, and what happened to Beltram’s Chevrolet.

Latest Publicly Available Investigative Updates

Research reviewed through October 18, 2026

2016: Correction involving Rebecca Rodriguez’s photograph

On May 9, 2016, The Charley Project’s founder published a notice about a possible identification error involving a photograph previously used for Rebecca Rodriguez.

A person believed to be a former classmate had contacted the organization, explaining that two students shared Rebecca’s name in a school yearbook.

After reviewing the submitted yearbook material, the organization corrected the photograph displayed in its records.

This was an important public-record correction, but it was not a reported investigative breakthrough or identification of any of the missing individuals.

Source: The Charley Project Blog.

January 28, 2019: Beltram’s case profile

The Charley Project identifies January 28, 2019, as the date Beltram’s case file was added to its website.

The published profile preserves identifying information, the vehicle description, and the reported circumstances of the disappearance.

This date represents publication of the case profile, not a new law enforcement discovery.

Source: Kenneth Beltram — The Charley Project.

April 23, 2025: Doe Network listing

The Doe Network’s public update archive records Kenneth John Beltram being added to its missing-person listings on April 23, 2025.

The organization assigned the reference number 6688DMCA.

The same update records the addition of cases involving Rebecca Rodriguez and Evangeline Rodriguez Silva.

These additions increased the availability of the case information to people researching missing-person investigations.

They do not establish that new evidence was recovered or that investigators developed a new suspect.

September 29, 2025: Doe Network information update

The Doe Network’s archive also records an information update to Beltram’s listing on September 29, 2025.

The update log does not, by itself, establish the substance of any investigative development. It should therefore be treated as a database maintenance event rather than evidence of a breakthrough.

Source: Doe Network Updates.

Status as of October 18, 2026

No publicly confirmed recent investigative breakthroughs were located in the sources reviewed.

Specifically, no verified announcement was found establishing an arrest, criminal charge, identification of remains, recovery of the Chevrolet, DNA identification, genetic-genealogy result, or resolution of the disappearances.

No official public announcement naming a suspect in Beltram’s disappearance was verified.

The publicly documented circumstances remain unresolved. A lack of published updates does not necessarily mean that the investigating agency has stopped working on the case.

Conclusion: Three Disappearances and Decades of Unanswered Questions

The disappearance of Kenneth John Beltram remains an unsettling part of California’s missing-person history.

What began as an evening involving three young people at Brentwood Park developed into a mystery involving two missing sisters, a reported sighting of Beltram the following morning, and a Chevrolet later seen with an unidentified driver.

Nearly five decades later, the available public record still does not establish what happened to Beltram, Evangeline Rodriguez Silva, or Rebecca Rodriguez.

The case illustrates why even seemingly small details can matter in a long-unsolved disappearance.

Someone may remember the pearl-white Chevrolet, the reported driver, an encounter in the Brentwood or Concord area, or information about the group’s intended destination.

Anyone with firsthand knowledge, historical documents, photographs, or information about the missing vehicle is encouraged to contact the Contra Costa County Sheriff’s Office.

The investigating agency’s telephone number published in Beltram’s missing-person profile is 925-313-2651. Because this number was obtained from a secondary case profile, callers may wish to verify the current contact route through the Sheriff’s Office.

Tips should be provided directly to law enforcement rather than used to make public accusations against individuals.

Kenneth John Beltram, Evangeline Rodriguez Silva, and Rebecca Rodriguez remain individuals whose disappearances deserve careful attention, responsible reporting, and answers supported by evidence.