295 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

William Biocca Missing Person Case

Last seen in Santa Rosa, California on Jan 20, 1950

Victim Details

Created

Sep 12, 2024

Case Added

Sep 24, 2024

First Name

William

Last Name

Biocca

Current Age

143

Age At Disappearance

Height

70 inches

Height To

71 inches

Weight

210 lbs

Weight To

220 lbs

Ethnicity

White / Caucasian

Gender

Male

Last Seen

Jan 20, 1950

City

Santa Rosa

State

California

County

Sonoma County

Tribal Land

Agency ID

152652

Agency Name

Sonoma County Sheriff's Department

Agency City

Santa Rosa

Agency State

California

Agency County

Sonoma County

Agency Zip Code

95403

Agency Address

2796 Ventura Avenue, California

Agency Phone

7075652569

Agency Jurisdiction

County

Agency Type

Law Enforcement

Agency Website

https://www.sonomasheriff.org/

Agency Case #

SD050913028

Agency Report Date

Sep 13, 2005

Primary Agency

Sonoma County Sheriff's Department

Case Contributors

3450

Hair Color

Unknown

Left Eye Color

Unknown

Right Eye Color

Unknown

Last Updated

Sep 29, 2026

Area Last Seen:

Case Description

Any updates on this case? Let us know!

Summary based on the NamUs case record (MP129354) and 1 other source

William Biocca, aged 67, went missing from Santa Rosa, California, on January 20, 1950. Biocca was last seen in the Santa Rosa area, and since his disappearance, no substantial leads have emerged. His case remains unsolved and is one of the many pre-1960 missing persons cases still being discussed by family members and online communities. The details surrounding his disappearance are limited, but the case has been highlighted on forums such as Websleuths, where individuals continue to share information and hope for closure for the family.
Last Seen: Jan 20, 1950

Links to Additional Sources (1)

See any mistakes? Let us know!

Missing Person / NamUs #MP129354

William Biocca Missing Person Case

Last seen in Santa Rosa, California on Jan 20, 1950

Victim Details

Case Description

Links to Additional Sources (1)

Latest News

Florida executes man who killed deputy after fighting for gun

Gov. Hochul is hiding the truth about ACS and murdered children

The Disappearance of Bettina Johnson

CHRISTA PIKE “MAD AS HELL:” DATE WITH “OLD SPARKY?”

Halloween Horrors: Disturbing Deaths Part 1

MP of the week: Julian Keith

Elusive murder suspect falls victim to detectives' chewing gum sting

What Mamdani gets wrong about the NYPD’s use of force

The Disappearance of Charles Gustafson

“LEGALLY BLONDE” STAR SELMA BLAIR FACING 7 YEARS BEHIND BARS, FOR KICKING, BITING, PUNCHING MELTDOWN

Forum Posts (3)

Other Missing Cases from Santa Rosa, California