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William Hancock — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this William Hancock across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents S & Sam — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Hancock |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1960 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Mechanic |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| S Hancock | Head | — | 52 | ~1888 |
| Rosa Hancock | Other | — | 82 | ~1858 |
| Veda Hancock | Spouse | — | 53 | ~1887 |
| Jack Hancock | Son | — | 23 | ~1917 |
| William Hancock | Son | — | 22 | ~1918 |
Census Appearances
1920
Alameda, California
Son, age 2
Alameda, California · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hancock |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Nebraska |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Son, age 12
Alameda, California · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hancock |
| Given Name | William W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Son, age 22
Alameda-County, California · implied b. ~1918 — 5 household members
| Surname | Hancock |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Occupation | Mechanic |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1960 |
| 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 Hancock across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father S Hancock (~0.92 confidence) and father Sam Hancock (~0.92 confidence) and father Samuel Hancock (~0.92 confidence) and mother Veda Hancock (~0.92 confidence) and mother Verda Hancock (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
S Hancock
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Sam Hancock
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Samuel Hancock
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Veda Hancock
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Verda Hancock
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Hancock
Son · 1940 · age 22 · b. ~1918 · California
★ You are viewing this record
Sibling
Jack Hancock
Sibling · 1940 · age 23
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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00436-00790)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William F Rozle | 72 | Head | — | Germany |
| 42 | Katrina Rozle | 72 | Wife | — | Germany |
| 43 | Ida Drewry | 63 | Head | Teacher | California |
| 44 | Mabel Drewry | 62 | Sister | Teacher | California |
| 45 | John Fitzpatrick | 47 | Head | Grocery Clerk | Ireland |
| 46 | Bina Fitzpatrick | 41 | Wife | — | Ireland |
| 47 | Elaine Fitzpatrick | 21 | Daughter | Stenographer | California |
| 48 | James Fitzpatrick | 20 | Son | Butcher | California |
| 49 | Frances Arbell | 31 | Head | Manager | Minnesota |
| 50 | Gloria Jean Arbell | 8 | Daughter | — | California |
| 52 | Attilo Giannini | 50 | Head | Laborer | Italy |
| 53 | Annunziata Giannini | 40 | Wife | — | Italy |
| 54 | Boris Giannini | 13 | Son | — | Penn |
| 55 | Nilo Giannini | 10 | Son | — | California |
| 56 | Attilo Toci | 47 | Brother-in-law | Laborer | Italy |
| 57 | S. H. Hancock | 52 | Head | Elec. Engr. | California |
| 58 | Veda L. Hancock | 53 | Wife | — | Nebraska |
| 59 | Rosa Hancock | 82 | Mother | — | France |
| 60 | William Hancock THIS PERSON | 22 | Son | Mechanic | California |
| 61 | Jack Hancock | 23 | Son | Elec. Engr. | California |
| 62 | Harold Bryant | 36 | Head | Store Manager | California |
| 63 | Laura Bryant | 33 | Wife | — | Montana |
| 64 | Charles Bryant | 14 | Son | — | California |
| 65 | Kenneth Bryant | 12 | Son | — | California |
| 66 | Eva C Leeper | 68 | Head | — | California |
| 67 | Lawrence Gisvella | 19 | Grandson | — | California |
| 68 | Simon Quint | 57 | Head | Tailor | Russia |
| 69 | Sahra Quint | 56 | Wife | Seamstress | Finland |
| 70 | Harry Quint | 34 | Son | Tailor | England |
| 71 | Vera Quint | 25 | Daughter-in-law | — | California |
| 72 | Katherine Kneier | 65 | Head | — | Germany |
| 73 | Clarence Clapp | 43 | Lodger | Machinist | Colorado |
| 74 | Martin Ofenbach | 60 | Lodger | Coremaker | Germany |
| 75 | W A Ackerman | 47 | Lodger | Manager | Pennsylvania |
| 76 | Theresa Cappello | 53 | Head | Housekeeper | Germany |
| 77 | Dante Bernardini | 35 | Lodger | Fireman | California |
| 78 | David Richards | 65 | Head | Painter | Ohio |
| 79 | Catherine Richards | 58 | Wife | — | California |
Pedigree Summary
William + 1 sibling
Gen 1 · 5 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)