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Billy Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Billy Williams across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 4-person household.
Age 12
b. ~1928
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Williams |
| Given Name | Billy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Highest Grade | Yes 6 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Unincorporated Place |
| Est. Birth Year | ~1928 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Billy | Age | Birth yr |
|---|---|---|---|---|
| Mary Williams | Head | — | 47 | ~1893 |
| Edward Williams | Son | — | 15 | ~1925 |
| Billy Williams | Son | — | 12 | ~1928 |
| Arthur Williams | Son | — | 17 | ~1923 |
Census Appearances
1930
Los Angeles, …
Son, age 1
Los Angeles, California · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Billy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Wales |
| Mother's Birthplace | England |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 12
Los-Angeles-County, California · implied b. ~1928 — 4 household members
| Surname | Williams |
| Given Name | Billy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | Yes 6 |
| 1935 Residence | California |
| 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 Billy Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Billy Williams
Son · 1940 · age 12 · b. ~1928 · California
★ You are viewing this record
Sibling
Arthur Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Williams
Sibling · 1940 · age 15
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
1940 US Federal Census — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00236-01104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James B Shepard | 40 | Lodger | Lepidovist | Kansas |
| 43 | Daniel Blanco | 34 | Head | Laborer | Mexico |
| 44 | Antonia Blanco | 29 | Wife | — | Mexico |
| 45 | Cecelia Blanco | 10 | Daughter | — | California |
| 46 | Christina Blanco | 9 | Daughter | — | California |
| 47 | Daniel Ray Blanco | 8 | Son | — | California |
| 48 | Dominga Blanco | 4 | Daughter | — | California |
| 49 | Mary Helen Blanco | 3 | Daughter | — | California |
| 50 | Cipriano Blanco | 0 | Son | — | California |
| 51 | Gonzalo Madrigal | 33 | Head | Farmer | Mexico |
| 52 | Martina Madrigal | 33 | Wife | — | Texas |
| 53 | Adelina Madrigal | 15 | Daughter | — | Texas |
| 54 | Louise Madrigal | 9 | Daughter | — | California |
| 55 | Francisco Madrigal | 7 | Son | — | California |
| 56 | Maria Madrigal | 4 | Daughter | — | California |
| 57 | Jesus Madrigal | 1 | Son | — | California |
| 58 | William Traynor | 23 | Head | Trackman | North Ireland |
| 59 | Mary Williams | 47 | Head | Seamstress | California |
| 60 | Arthur Williams | 17 | Son | — | California |
| 61 | Edward Williams | 15 | Son | — | California |
| 62 | Billy Williams THIS PERSON | 12 | Son | — | California |
| 63 | John S Higgins | 62 | Head | Pickler | Texas |
| 64 | Elizabeth Higgins | 63 | Wife | — | Texas |
| 65 | Gloria D Thomas | 25 | Daughter | — | Texas |
| 66 | James Thomas | 4 | Grandson | — | California |
| 68 | Joe Moniz | 30 | Head | Dairyman | Portugal |
| 69 | Rose Moniz | 26 | Wife | — | Portugal |
| 70 | Rosemary Moniz | 6 | Daughter | — | California |
| 71 | Joe Moniz | 2 | Son | — | California |
| 72 | John G. B. Menezes | 52 | Head | Farm Farmer | Portugal |
| 73 | Aldenira Menezes | 52 | Wife | — | Portugal |
| 74 | Mabel Menezes | 23 | Daughter | New Worker | Hawaii |
| 75 | Joe De Tango | 29 | Head | Farmer | Philippine Islands |
| 76 | Joseph Jelinek | 47 | Head | Baker | Czechoslovakia |
| 77 | Joseph Parra | 35 | Head | Blacksmith | California |
| 78 | Esther Parra | 31 | Wife | — | California |
| 79 | Joseph Charles Parra | 9 | Son | — | California |
| 80 | Rowena Parra | 7 | Daughter | — | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)