WM
William Mills — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this William Mills across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents William & W — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Mills |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | driver |
| Industry | Taxi Co. |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 1400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Driver |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1908 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Mills | Head | — | 32 | ~1908 |
| Billy Mills | Son | — | 4 | ~1936 |
| Barry Mills | Son | — | 1 | ~1939 |
| Mary Mills | Spouse | — | 26 | ~1914 |
Census Appearances
1920
San Francisco, …
Son, age 12
San Francisco, California · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mills |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | New York |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Son, age 22
San Francisco, California · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miles |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | New York |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Head, age 32
San-Francisco-County, California · implied b. ~1908 — 4 household members
| Surname | Mills |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | driver |
| Industry | Taxi Co. |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 1400 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Mills across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Miles (~0.92 confidence) and father W Mills (~0.92 confidence) and mother Lona Mills (~0.92 confidence) and mother Lona Miles (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Miles
b. ~1875
Source father
● Household
· direct · ~0.92
Father
W Mills
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Lona Mills
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Lona Miles
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mills
Head · 1940 · age 32 · b. ~1908 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00308-00742)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harry Cordell | 58 | head | Clerk | England |
| 42 | Lydia Cordell | 41 | wife | — | Nebraska |
| 43 | Dorothy Cordell | 19 | daughter | — | California |
| 44 | Virginia Cordell | 12 | daughter | — | California |
| 45 | James Carroll | 64 | head | Cashier | Ireland |
| 46 | Margaret Carroll | 62 | wife | — | California |
| 47 | Edward Shea | 59 | head | Fireman | California |
| 48 | Emily Shea | 41 | wife | — | California |
| 49 | Helen Palefraw | 60 | Head | — | Germany |
| 50 | Fred Hutchinson | 42 | Head | Fireman | California |
| 51 | Olga Hutchinson | 32 | wife | — | California |
| 52 | Richard Hutchinson | 4 | son | — | California |
| 53 | Elin Zetterholm | 60 | mother | — | Sweden |
| 54 | Roy Zetterholm | 15 | nephew | — | California |
| 55 | Frank Rock | 54 | head | Clerk | California |
| 56 | Helen Rock | 51 | wife | — | California |
| 57 | James Rock | 21 | son | Clerk | California |
| 58 | Francis Rock | 15 | son | — | California |
| 59 | Marie Bellet | 58 | head | — | France |
| 60 | Pierre Rousseau | 43 | son | Driver | France |
| 61 | Adele Rousseau | 28 | wife | — | California |
| 62 | Numa Rousseau | 2 | daughter | — | California |
| 63 | George Brown | 35 | head | Bookkeeper | California |
| 64 | Edna Brown | 47 | wife | — | California |
| 65 | Tad Brown | 3 | son | — | California |
| 66 | John Vazquez | 46 | head | Owner | Mexico |
| 67 | Mary Vazquez | 60 | sister | — | Mexico |
| 68 | Joseph Vazquez | 32 | son | Clerk | Mexico |
| 69 | Cirilo Vazquez | 29 | son | Owner | Mexico |
| 70 | Virginia Vazquez | 26 | wife | — | Mexico |
| 71 | Ricardo Vazquez | 3 | son | — | California |
| 72 | Peter Nelson | 53 | head | Repairman | Sweden |
| 73 | Hulda Nelson | 53 | wife | — | Sweden |
| 74 | Dorothy Nelson | 21 | daughter | Stenographer | Montana |
| 75 | Nina Nelson | 18 | daughter | Salesgirl | Montana |
| 76 | Ray Nelson | 15 | son | — | California |
| 77 | William Mills THIS PERSON | 32 | head | Driver | California |
| 78 | Mary Mills | 26 | wife | — | California |
| 79 | Billy Mills | 4 | son | — | California |
| 80 | Barry Mills | 1 | son | — | California |
Related Census Records
Pedigree Summary
William
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)