WF
William Fitzgerald — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this William Fitzgerald across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Andrew & Arthur — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Fitzgerald |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | SAN FRANCISCO |
| 1935 Residence (County) | SAN FRANCISCO |
| Additional Details | |
| Occupation | Teamster |
| Industry | Drayage |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Teamster |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Gloria Fitzgerald | Daughter | — | 4 | ~1936 |
| Anna Fitzgerald | Head | — | 48 | ~1892 |
| Robert Fitzgerald | Son | — | 15 | ~1925 |
| William Fitzgerald | Son | — | 28 | ~1912 |
Census Appearances
1920
San Francisco, …
Son, age 8
San Francisco, California · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| 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 19
San Francisco, California · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Teamster |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 28
San-Francisco-County, California · implied b. ~1912 — 4 household members
| Surname | Fitzgerald |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | SAN FRANCISCO |
| 1935 Residence (County) | SAN FRANCISCO |
| Occupation | Teamster |
| Industry | Drayage |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 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 Fitzgerald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Fitzgerald (~0.92 confidence) and father Arthur Fitzgerald (~0.92 confidence) and mother Anna Fitzgerald (~0.92 confidence) and mother Anna Fitzgerald (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Fitzgerald
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Arthur Fitzgerald
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Anna Fitzgerald
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Anna Fitzgerald
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Fitzgerald
Son · 1940 · age 28 · b. ~1912 · California
★ You are viewing this record
Sibling
Gloria Fitzgerald
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Fitzgerald
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 — 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-t0627-00302-00778)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis Perri | 45 | Head | Laborer | Italy |
| 2 | Catherine Perri | 38 | Wife | — | Italy |
| 3 | Mary Perri | 15 | Daughter | — | California |
| 4 | Lena Perri | 12 | Daughter | — | California |
| 5 | Dorothy Perri | 10 | Daughter | — | California |
| 6 | Josephine Perri | 7 | Daughter | — | California |
| 7 | James Spatafore | 64 | Uncle | Trucker | Italy |
| 8 | Renaldo Mambrini | 25 | Son-in-law | Laborer | Utah |
| 9 | Rose Mambrini | 17 | Daughter | — | California |
| 10 | Jack Smith | 22 | Lodger | Office Clerk | California |
| 11 | Sam Rossi | 24 | Lodger | Laborer | Oklahoma |
| 12 | Charles Herbert | 63 | Head | Fumigator | Germany |
| 13 | Louise Herbert | 44 | Wife | — | Washington |
| 14 | James Herbert | 20 | Son | Sailor | California |
| 15 | Bert Herbert | 21 | Son | Sailor | Washington |
| 16 | Margaret Herbert | 14 | Daughter | — | California |
| 17 | Eleanor Herbert | 8 | Daughter | — | California |
| 18 | Willard Herbert | 3 | Son | — | California |
| 19 | Anna Fitzgerald | 48 | Head | — | California |
| 20 | William Fitzgerald THIS PERSON | 28 | Son | Teamster | California |
| 21 | Robert Fitzgerald | 15 | Son | — | California |
| 22 | Gloria Fitzgerald | 4 | Daughter | — | California |
| 23 | Carl Hoppe | 51 | Head | Machinist | Connecticut |
| 24 | Hermine Hoppe | 51 | Wife | — | Germany |
| 25 | Ernest Hoppe | 21 | Son | Electrician | California |
| 26 | Harold Hoppe | 16 | Son | — | California |
| 27 | Walter Hoppe | 15 | Son | — | California |
| 28 | John Sorensen | 36 | Head | Contractor Painter | Denmark |
| 29 | Anna Sorensen | 36 | Wife | — | Denmark |
| 30 | K. John Sorensen | 9 | Son | — | California |
| 31 | Richard Sorensen | 7 | Son | — | California |
| 32 | Jeanne Puble | 63 | Head | — | France |
| 33 | Julie Puble | 25 | Daughter | Office Clerk | California |
| 34 | Bert Whalen | 29 | Son-in-law | Sheet Metal Worker | California |
| 35 | Helen Whalen | 28 | Daughter | Office Clerk | California |
| 36 | John Colbert | 59 | Head | Retail Pet Store | Ireland |
| 37 | Elizabeth Colbert | 61 | Wife | — | California |
| 38 | Mary Colbert | 23 | Daughter | Music Teacher | California |
| 39 | Richard Colbert | 19 | Son | — | California |
| 40 | Mary Miley | 64 | Sister-in-law | — | California |
Pedigree Summary
William + 2 siblings
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)