JF
John Fitzpatrick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Alameda-County, California
Our Model Tree links this John Fitzpatrick across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 4-person household.
Age 47
b. ~1893
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Fitzpatrick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Grocery clerk |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1560 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Grocery Clerk |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1893 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Elaine Fitzpatrick | Daughter | — | 21 | ~1919 |
| John Fitzpatrick | Head | — | 47 | ~1893 |
| James Fitzpatrick | Son | — | 20 | ~1920 |
| Bina Fitzpatrick | Spouse | — | 41 | ~1899 |
Census Appearances
1920
San Francisco, …
Other, age 27
San Francisco, California · implied b. ~1893 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | John |
| Relationship to Head | En man |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1912 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Guard |
| Industry | US Army |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | ireland |
1930
San Francisco, …
Other, age 38
San Francisco, California · implied b. ~1892 — 33 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1921 |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Laborer |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Alameda-County, California
Head, age 47
Alameda-County, California · implied b. ~1893 — 4 household members
| Surname | Fitzpatrick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | First papers filed |
| Occupation | Grocery clerk |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1560 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Fitzpatrick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Fitzpatrick
Head · 1940 · age 47 · b. ~1893 · California
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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 THIS PERSON | 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 | 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 |
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)