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William Fitzpatrick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Fitzpatrick across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 15-person household.
Age 12
b. ~1928
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Fitzpatrick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1928 |
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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Gerald Fitzpatrick | Son | — | 4 | ~1936 |
| Helen Fitzpatrick | Daughter | — | 17 | ~1923 |
| William Manning | Other | — | 67 | ~1873 |
| Marion Fitzpatrick | Daughter | — | 11 | ~1929 |
| Francis Fitzpatrick | Son | — | 2 | ~1938 |
| Edward Fitzpatrick | Son | — | 14 | ~1926 |
| Elizabeth Fitzpatrick | Daughter | — | 8 | ~1932 |
| Edward Fitzpatrick | Head | — | 40 | ~1900 |
| John Fitzpatrick | Son | — | 6 | ~1934 |
| Joseph Fitzpatrick | Son | — | 5 | ~1935 |
| Dorthy Fitzpatrick | Daughter | — | 10 | ~1930 |
| Helen Fitzpatrick | Spouse | — | 34 | ~1906 |
| Warren Fitzpatrick | Son | — | 1 | ~1939 |
| William Fitzpatrick | Son | — | 12 | ~1928 |
| Robert Fitzpatrick | Son | — | 9 | ~1931 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 3
Suffolk, Massachusetts · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 12
Suffolk-County, Massachusetts · implied b. ~1928 — 15 household members
| Surname | Fitzpatrick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Fitzpatrick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Fitzpatrick
Son · 1940 · age 12 · b. ~1928 · Massachusetts
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Sibling
Warren Fitzpatrick
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Fitzpatrick
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Fitzpatrick
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Fitzpatrick
Sibling · 1940 · age 9
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
Sibling
Francis Fitzpatrick
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Fitzpatrick
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorthy Fitzpatrick
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Fitzpatrick
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Fitzpatrick
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Fitzpatrick
Sibling · 1940 · age 8
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01659-00363)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Montague | 30 | Head | Clerk | Massachusetts |
| 2 | Marion Montague | 30 | Wife | — | Massachusetts |
| 3 | Walter, Jr Montague | 6 | Son | — | Massachusetts |
| 4 | Catherine A. O'Leary | 52 | Head | — | Eire |
| 5 | Catherine A. Jr O'Leary | 20 | Daughter | Typist | Massachusetts |
| 6 | Edward O'Leary | 18 | Son | Messenger | Massachusetts |
| 7 | Margaret O'Leary | 15 | Daughter | — | Massachusetts |
| 8 | Dorothy O'Leary | 13 | Daughter | — | Massachusetts |
| 9 | Michael J Kane | 64 | Head | — | Massachusetts |
| 10 | Hazel S. Kane | 50 | Wife | — | Massachusetts |
| 11 | James Kane | 25 | Son | Messenger | Massachusetts |
| 12 | Alice Kane | 21 | Daughter | Seamstress | Massachusetts |
| 13 | Robert H Kane | 18 | Son | — | Massachusetts |
| 14 | Helen Kane | 16 | Daughter | — | Massachusetts |
| 15 | Ruth F Kane | 14 | Daughter | — | Massachusetts |
| 16 | William J Campin | 70 | Lodger | — | Massachusetts |
| 17 | Edward J Fitzpatrick | 40 | Head | Chauffeur | Massachusetts |
| 18 | Helen W. Fitzpatrick | 34 | Wife | — | Massachusetts |
| 19 | Helen W. Jr Fitzpatrick | 17 | Daughter | — | Massachusetts |
| 20 | Edward J. Jr Fitzpatrick | 14 | Son | — | Massachusetts |
| 21 | William Fitzpatrick THIS PERSON | 12 | Son | — | Massachusetts |
| 22 | Marion R Fitzpatrick | 11 | Daughter | — | Massachusetts |
| 23 | Dorthy E Fitzpatrick | 10 | Daughter | — | Massachusetts |
| 24 | Robert J. Fitzpatrick | 9 | Son | — | Massachusetts |
| 25 | Elizabeth M Fitzpatrick | 8 | Daughter | — | Massachusetts |
| 26 | John Fitzpatrick | 6 | Son | — | Massachusetts |
| 27 | Gerald Fitzpatrick | 4 | Son | — | Massachusetts |
| 28 | Francis Fitzpatrick | 2 | Son | — | Massachusetts |
| 29 | Warren D Fitzpatrick | 1 | Son | — | Massachusetts |
| 30 | Joseph T Fitzpatrick | 5 | Son | — | Massachusetts |
| 31 | William J Manning | 67 | Father | Lumber Inspector | Rhode Island |
| 32 | Alma L Hubert | 44 | Head | — | Canada-English |
| 33 | Charles J Hubert | 19 | Son | Chauffeur Helper | Massachusetts |
| 34 | James P Hubert | 17 | Son | — | Massachusetts |
| 35 | Joseph T Hubert | 14 | Son | — | Massachusetts |
| 36 | Donald G Hubert | 10 | Son | — | Massachusetts |
| 37 | Anna R Hubert | 8 | Daughter | — | Massachusetts |
| 38 | Left This Line By Mistake | None | — | — | — |
| 39 | Gertrude T Belyea | 48 | Head | — | Massachusetts |
| 40 | Paul V Belyea | 23 | Son | Clerk | Massachusetts |
Search for William Fitzpatrick
All William Fitzpatrick Census Records Discover Fitzpatrick Family TreeAbout 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)