JF
John Fitzgerald — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Fitzgerald across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | West Covina City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | West Covina City |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Nancy Fitzgerald | Daughter | — | 4 | ~1936 |
| Diana Fitzgerald | Daughter | — | 7 | ~1933 |
| Beverly Fitzgerald | Daughter | — | 14 | ~1926 |
| Betty Fitzgerald | Daughter | — | 17 | ~1923 |
| John Fitzgerald | Head | — | 45 | ~1895 |
| Ella Kerat | Other | — | 78 | ~1862 |
| Rex Fitzgerald | Son | — | 11 | ~1929 |
| John Fitzgerald | Son | — | 16 | ~1924 |
| Vernon Fitzgerald | Son | — | 9 | ~1931 |
| Jack Fitzgerald | Son | — | 13 | ~1927 |
| Blanche Fitzgerald | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Los Angeles, …
Son, age 5
Los Angeles, California · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 16
Los-Angeles-County, California · implied b. ~1924 — 11 household members
| Surname | Fitzgerald |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | West Covina City |
| 1935 Residence (County) | Los Angeles |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 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 John Fitzgerald across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Fitzgerald
Son · 1940 · age 16 · b. ~1924 · California
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Sibling
Beverly Fitzgerald
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Fitzgerald
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rex Fitzgerald
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vernon Fitzgerald
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Fitzgerald
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Diana Fitzgerald
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Fitzgerald
Sibling · 1940 · age 17
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
40 people indexed on this census page (nara:1940:m-t0627-00227-00235)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Tamaki | 13 | son | — | California |
| 42 | Lois Tamaki | 9 | daughter | — | California |
| 43 | Daniel Petersen | 60 | head | Farmer | Kansas |
| 44 | Irene Petersen | 49 | wife | — | California |
| 45 | Haskell F. Willey | 86 | head | Farmer | Vermont |
| 46 | Lillian E. Willey | 83 | wife | — | Illinois |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | Clara B. Heath | 75 | head | Farmer | Illinois |
| 50 | Ben Ringer | 46 | lodger | Farmer | Ohio |
| 51 | Jean Heath | 19 | gdaughter | — | California |
| 52 | James Heath | 17 | gson | — | California |
| 53 | Minnie L. Swallow | 44 | head | — | Missouri |
| 54 | Fred Swallow | 63 | husband | — | New Hampshire |
| 55 | James B. Hutchison | 63 | brother | — | Missouri |
| 56 | Marion Coltrin | 58 | head | Farmer | California |
| 57 | Bessie Coltrin | 52 | wife | — | California |
| 58 | A. C. Martin | 36 | head | Foreman | Arkansas |
| 59 | Annie Martin | 34 | wife | Grader | Arkansas |
| 60 | John J. Fitzgerald | 45 | head | Dep Sheriff | California |
| 61 | Blanche Fitzgerald | 42 | wife | — | California |
| 62 | Betty J. Fitzgerald | 17 | daughter | — | California |
| 63 | John Fitzgerald THIS PERSON | 16 | son | — | California |
| 64 | Beverly Fitzgerald | 14 | daughter | — | California |
| 65 | Jack Fitzgerald | 13 | son | — | California |
| 66 | Rex Fitzgerald | 11 | son | — | California |
| 67 | Vernon Fitzgerald | 9 | son | — | California |
| 68 | Diana Fitzgerald | 7 | daughter | — | California |
| 69 | Nancy Fitzgerald | 4 | daughter | — | California |
| 70 | Ella Kerat | 78 | motherlaw | — | Ohio |
| 71 | Irene Hartley | 68 | head | — | Kansas |
| 72 | Archie E. Batesel | 59 | brotherlaw | Mechanic | Ohio |
| 73 | Eva C. Batesel | 57 | sister | Dresser | Kansas |
| 74 | Wayne E. Batesel | 25 | nephew | Driver | Kansas |
| 75 | Rawleigh Russell | 29 | lodger | Driver | Arkansas |
| 76 | Walter L. Starbuck | 48 | head | Farmer | Kansas |
| 77 | Edith Starbuck | 44 | wife | Housekeeper | Kansas |
| 78 | Helen Starbuck | 19 | daughter | — | California |
| 79 | Dolores Starbuck | 8 | niece | — | Oregon |
| 80 | Lorette James | 67 | head | Farmer | Iowa |
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)