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William Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this William Lynch across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents Arthur & Grace — first a head (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Male
Head
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Lynch |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | Bank Inspector |
| Industry | Banking |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Bank Inspector |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1907 |
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 |
|---|---|---|---|---|
| Sharon Lynch | Daughter | — | 1 | ~1939 |
| Joanne Lynch | Daughter | — | 7 | ~1933 |
| William Lynch | Head | — | 33 | ~1907 |
| Pauline Lynch | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Alameda, California
Son, age 11
Alameda, California · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | New York |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Son, age 21
Alameda, California · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 21 |
| Father's Birthplace | New York |
| Mother's Birthplace | Holland |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Head, age 33
Alameda-County, California · implied b. ~1907 — 4 household members
| Surname | Lynch |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Occupation | Bank Inspector |
| Industry | Banking |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | Hs 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 Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Lynch (~0.92 confidence) and mother Grace Lynch (~0.92 confidence) and father Edward Lynch (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Lynch
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Grace Lynch
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Edward Lynch
b. ~1883
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Lynch
Head · 1940 · age 33 · b. ~1907 · 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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00433-00391)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard A. Hobbs | 70 | Head | — | Canada English |
| 2 | Winifred Hobbs | 50 | Wife | — | Wales |
| 3 | Anton Jr. Feix | 36 | Head | Accountant | Massachusetts |
| 4 | Mary Feix | 26 | Wife | Bookkeeper | California |
| 5 | Magdalena H. Bartl | 72 | Head | — | Germany |
| 6 | Magdalena Bartl | 70 | Wife | — | Germany |
| 7 | Charles W. Cherry | 28 | Head | Salesman | Kansas |
| 8 | Susana Cherry | 24 | Wife | Waitress | California |
| 9 | Richard A. Mills | 26 | Head | Assistant Manager | Canada English |
| 10 | Adele Mills | 24 | Wife | — | California |
| 11 | Knutas Amburg | 36 | Head | Machine Designing | Nebraska |
| 12 | Helen B. Amburg | 26 | Wife | Stenographer | Oregon |
| 13 | Frank W. Spears | 59 | Head | Watchman | Colorado |
| 14 | Mary A. Spears | 44 | Wife | — | Utah |
| 15 | Pilio Piazzi | 42 | Head | Auto Engine Machinist | California |
| 16 | Hildegarde Piazzi | 39 | Wife | — | New York |
| 17 | Leo John Piazzi | 11 | Son | — | California |
| 18 | Don Leonard Piazzi | 4 | Son | — | California |
| 19 | Stanley Ezekiel | 32 | Head | Salesman | California |
| 20 | Evelyn Ezekiel | 33 | Wife | — | California |
| 21 | Joan Ezekiel | 2 | Daughter | — | California |
| 22 | Christian Jensen | 52 | Head | Laborer | Denmark |
| 23 | Hannah Jensen | 52 | Wife | — | Norway |
| 24 | Ercole Giovanetti | 38 | Head | Auto Mechanic | California |
| 25 | Ida Giovanetti | 32 | Wife | Advertising Department | California |
| 26 | Leonard Giovanetti | 15 | Son | — | California |
| 27 | Ronald Giovanetti | 12 | Son | — | California |
| 28 | Oscar Swanson | 38 | Head | Bus Driver | Pennsylvania |
| 29 | Edith Swanson | 45 | Wife | — | Michigan |
| 30 | Hera Linda | 38 | Boarder | — | Utah |
| 31 | William Lynch THIS PERSON | 33 | Head | Bank Inspector | California |
| 32 | Pauline Lynch | 29 | Wife | — | Washington |
| 33 | Joanne Lynch | 7 | Daughter | — | California |
| 34 | Sharon Lynch | 1 | Daughter | — | California |
| 35 | Jack Jensen | 46 | Head | Mechanical Engineer | Denmark |
| 36 | Nana Jensen | 38 | Wife | — | Denmark |
| 37 | Hope Jensen | 15 | Daughter | — | California |
| 38 | Moana Jensen | 13 | Daughter | — | California |
| 39 | Edward Callahan | 67 | Head | — | California |
| 40 | Gertrude Callahan | 45 | Wife | — | California |
Pedigree Summary
William
Gen 1 · 3 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)