JF
John Fitzpatrick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Fitzpatrick across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Fitzpatrick |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Industry | 0 |
| Class of Worker | No |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mabel Fitzpatrick | Daughter | — | 13 | ~1927 |
| Viola Fitzpatrick | Daughter | — | 10 | ~1930 |
| Claudette Fitzpatrick | Daughter | — | 7 | ~1933 |
| Robert Fitzpatrick | Head | — | 44 | ~1896 |
| Cornelius Fitzpatrick | Son | — | 7 | ~1933 |
| John Fitzpatrick | Son | — | 15 | ~1925 |
| Robert Fitzpatrick | Son | — | 16 | ~1924 |
| Joseph Fitzpatrick | Son | — | 5 | ~1935 |
| Mabel Fitzpatrick | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Baltimore, Maryland
Son, age 2
Baltimore, Maryland · implied b. ~1928 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 15
Baltimore-City-County, Maryland · implied b. ~1925 — 9 household members
| Surname | Fitzpatrick |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Industry | 0 |
| Class of Worker | No |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Fitzpatrick
Son · 1940 · age 15 · b. ~1925 · Maryland
★ You are viewing this record
Sibling
Robert Fitzpatrick
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Viola Fitzpatrick
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Fitzpatrick
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claudette Fitzpatrick
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cornelius Fitzpatrick
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Fitzpatrick
Sibling · 1940 · age 5
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01516-00477)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine @ Fowler | 30 | Wife | — | Maryland |
| 42 | James Fowler | 9 | Son | — | Maryland |
| 43 | John Fowler | 7 | Son | — | Maryland |
| 45 | John D. @ Grant | 69 | Head | — | Virginia |
| 46 | Mary Eliz Stump | 60 | Cousin | — | Maryland |
| 47 | Julius Fitzpatrick | 17 | Cousin | — | Maryland |
| 48 | Paul Reinstein | 38 | Head | Shoe Cutter | Maryland |
| 49 | Emma Reinstein | 35 | Wife | — | Maryland |
| 50 | Claire Reinstein | 15 | Daughter | — | Maryland |
| 51 | Richard Reinstein | 13 | Son | — | Maryland |
| 52 | Regina Reinstein | 10 | Daughter | — | Maryland |
| 53 | Robert W. Fitzpatrick | 44 | Head | — | Maryland |
| 54 | Mabel Fitzpatrick | 44 | Wife | — | Maryland |
| 55 | Robert Jr Fitzpatrick | 16 | Son | — | Maryland |
| 56 | John D Fitzpatrick THIS PERSON | 15 | Son | — | Maryland |
| 57 | Mabel Fitzpatrick | 13 | Daughter | — | Maryland |
| 58 | Viola Fitzpatrick | 10 | Daughter | — | Maryland |
| 59 | Cornelius Fitzpatrick | 7 | Son | — | Maryland |
| 60 | Claudette Fitzpatrick | 7 | Daughter | — | Maryland |
| 61 | Joseph Fitzpatrick | 5 | Son | — | Maryland |
| 62 | Lottie @ Wright | 57 | Head | — | Maryland |
| 63 | George Wright | 29 | Son | Cab Driver | Maryland |
| 64 | John Wright | 21 | Son | Kitchen Helper | Maryland |
| 65 | Margaret Wright | 18 | Daughter | Machine Oper | Maryland |
| 66 | Charles Hoare | 31 | Head | Oil Burner Mech | Maryland |
| 67 | Mary @ Hoare | 30 | Wife | — | Maryland |
| 68 | Ruth Evelyn Hoare | 11 | Daughter | — | Maryland |
| 69 | Charles A Hoare | 10 | Son | — | Maryland |
| 70 | Herbert Hoare | 8 | Son | — | Maryland |
| 72 | Arthur @ Beecher | 41 | Head | Laborer | Maryland |
| 73 | Anna M Beecher | 31 | Wife | — | Maryland |
| 74 | Gerald Beecher | 15 | Son | — | Maryland |
| 75 | James Beecher | 14 | Son | — | Maryland |
| 76 | Elizabeth Beecher | 12 | Daughter | — | Maryland |
| 77 | Ora @ Ham | 36 | Head | — | Virginia |
| 78 | Aldine Ham | 11 | Son | — | Virginia |
| 79 | Anna Ham | 8 | Daughter | — | Virginia |
| 80 | Dewayne Ham | 5 | Daughter | — | Virginia |
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)