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William Ray — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this William Ray across the 1910, 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents William & Lillian — first a son (b.~1905), then head of a 8-person household.
Age 25
b. ~1905
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Ray |
| Given Name | William L Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Nevada |
| Additional Details | |
| Occupation | Engineer |
| Industry | Oil Business |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Engineer |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1905 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Ray | Daughter | — | 12 | ~1918 |
| Lillian Ray | Daughter | — | 10 | ~1920 |
| William Ray | Head | — | 50 | ~1880 |
| William Ray | Son | — | 25 | ~1905 |
| Charles Ray | Son | — | 23 | ~1907 |
| Lloyd Ray | Son | — | 19 | ~1911 |
| Mead Ray | Son | — | 13 | ~1917 |
| Lillian Ray | Spouse | — | 50 | ~1880 |
Census Appearances
1910
San Francisco, …
Other, age 5
San Francisco, California · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ray |
| Given Name | William S |
| Relationship to Head | grandson |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Nevada |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Son, age 15
San Francisco, California · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ray |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 25
San Francisco, California · implied b. ~1905 — 8 household members
| Surname | Ray |
| Given Name | William L Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Nevada |
| Occupation | Engineer |
| Industry | Oil Business |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links William Ray across 3 US Census years (1910, 1920 and 1930) in San Francisco, California, using XGBoost record linkage. Identified parents: father William Ray (~0.82 confidence) and mother Lillian Ray (~0.92 confidence) and father William Ray (~0.92 confidence) and mother Ida Ray (~0.92 confidence). The pedigree spans 2 generations with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.9
Father
William Ray
b. ~1850
Source father>father
● Household
· direct · ~0.82
Mother
Lillian Ray
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
William Ray
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Ida Ray
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Ray
Son · 1930 · age 25 · b. ~1905 · California
★ You are viewing this record
Sibling
Mead Ray
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Ray
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Ray
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Ray
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lloyd Ray
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
22 people indexed on this census page (ia:1930:californiacensus00reel198:0202)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William L Ray | 50 | Head | Manager | California |
| 2 | Lillian Ray | 50 | Wife | — | Nevada |
| 3 | William L Jr Ray THIS PERSON | 25 | Son | Engineer | California |
| 4 | Charles Ray | 23 | Son | Engineer | California |
| 5 | Lloyd Ray | 19 | Son | — | California |
| 6 | Mead Ray | 13 | Son | — | California |
| 7 | Margaret Ray | 12 | Daughter | — | California |
| 8 | Lillian Ray | 10 | Daughter | — | California |
| 10 | William Mckinney | 44 | Head | Superintendent | California |
| 11 | Marie Mckinney | 45 | Wife | — | France |
| 12 | Harold Mckinney | 16 | Son | — | California |
| 13 | Josephine Mckinney | 15 | Daughter | — | California |
| 14 | Elizabeth Mckinney | 11 | Daughter | — | California |
| 15 | William Mckinney | 2 | Son | — | California |
| 16 | James Mckinney | 2 | Son | — | California |
| 17 | Mary Mckinney | 36 | Sister | Stenographer | California |
| 18 | Margaret Mckinney | 30 | Sister | Servant | France |
| 19 | Catherine Mckinney | 67 | Mother | — | France |
| 21 | Lulu Lutz | 30 | Head | — | California |
| 22 | Dorothy Lutz | 22 | Daughter | — | California |
| 23 | William Lutz | 18 | Son | — | California |
| 24 | Arthur Lutz | 8 | Son | — | California |
Related Census Records
Pedigree Summary
William + 5 siblings
Gen 1 · 3 parents
~0.92
Gen 2 · 1 grandparents
~0.82
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)