JF
John Fitzpatrick — 1940 US Census Record
Model Tree available1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this John Fitzpatrick across the 1920, 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Thomas & Margaret — first a son (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Fitzpatrick |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Marshfield (Town) |
| 1935 Residence (County) | Plymouth |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Marshfield Town |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Thomas Fitzpatrick | Head | — | 73 | ~1867 |
| John Fitzpatrick | Son | — | 32 | ~1908 |
| Margaret Fitzpatrick | Spouse | — | 66 | ~1874 |
Census Appearances
1920
Bristol, Massachusetts
Son, age 11
Bristol, Massachusetts · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Bristol, Massachusetts
Son, age 21
Bristol, Massachusetts · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Orderly |
| Industry | Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Son, age 32
Plymouth-County, Massachusetts · implied b. ~1908 — 3 household members
| Surname | Fitzpatrick |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Marshfield (Town) |
| 1935 Residence (County) | Plymouth |
| Industry | 0 |
| Highest Grade | H-4 |
| 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 John Fitzpatrick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Fitzpatrick (~0.92 confidence) and mother Margaret Fitzpatrick (~0.92 confidence) and father Edward Fitzpatrick (~0.92 confidence) and father Edward Fitzpatrick (~0.92 confidence) and mother Catherine Fitzpatrick (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Fitzpatrick
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Margaret Fitzpatrick
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Edward Fitzpatrick
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Edward Fitzpatrick
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Catherine Fitzpatrick
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Fitzpatrick
Son · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01638-00731)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marguerita Burke | 11 | Daughter | — | Massachusetts |
| 42 | Louis R. Blanchard | 71 | Head | Merchant | Massachusetts |
| 43 | Hazel M. Blanchard | 50 | Wife | — | Massachusetts |
| 44 | Geraldine Mccroy | 24 | Stepdaughter | — | Massachusetts |
| 45 | Peter A. Babin | 59 | Head | Broker | Massachusetts |
| 46 | Emma Babin | 57 | Wife | — | Canada English |
| 47 | Robert C. Peck | 40 | Head | Water Tender | Massachusetts |
| 48 | Lillian C. Peck | 47 | Wife | — | Massachusetts |
| 49 | Terrence O'Brien | 57 | Head | Bartender | Massachusetts |
| 50 | Margaret O'Brien | 58 | Wife | — | Massachusetts |
| 51 | Thomas H. Fitzpatrick | 73 | Head | Broker | Massachusetts |
| 52 | Margaret W. Fitzpatrick | 66 | Wife | — | Massachusetts |
| 53 | John J. Fitzpatrick THIS PERSON | 32 | Son | — | Massachusetts |
| 54 | Theodore C. Harrington | 37 | Head | Salesman | Massachusetts |
| 55 | Margaret H. Harrington | 38 | Wife | — | Massachusetts |
| 56 | Theodore Harrington | 13 | Son | — | Massachusetts |
| 57 | James Harrington | 11 | Son | — | Massachusetts |
| 58 | Jean Harrington | 10 | Daughter | — | Massachusetts |
| 59 | William Harrington | 9 | Son | — | Massachusetts |
| 60 | Rose Harrington | 8 | Daughter | — | Massachusetts |
| 61 | Paul Harrington | 6 | Son | — | Massachusetts |
| 62 | John Harrington | 5 | Son | — | Massachusetts |
| 63 | Mary C. Harrington | 1 | Daughter | — | Massachusetts |
| 64 | Norman A. Sinnett | 38 | Head | Owner | Massachusetts |
| 65 | Genevieve Sinnett | 37 | Wife | — | New Hampshire |
| 66 | Marilyn Sinnett | 13 | Daughter | — | Massachusetts |
| 67 | Peter Sinnett | 3 | Son | — | Massachusetts |
| 68 | Elizabeth H. Waterman | 73 | Head | — | New York |
| 69 | Elm Nightingale | 72 | Head | — | Massachusetts |
| 70 | Eliza Nightingale | 70 | Wife | — | Massachusetts |
| 71 | Charles L. Brown | 34 | Head | Carpenter | Massachusetts |
| 72 | Herbert J. Brown | 26 | Brother | Farming | Massachusetts |
| 73 | Hallet P. Hood | 53 | Head | Laborer | Maine |
| 74 | Katherine Hood | 18 | Daughter | — | Massachusetts |
| 75 | Barbara Hood | 15 | Daughter | — | Massachusetts |
| 76 | Ralph O. Houghton | 50 | Head | Manager | Massachusetts |
| 77 | Eva F. Houghton | 49 | Wife | — | Massachusetts |
| 78 | Francis Houghton | 28 | Son | Laborer | Massachusetts |
| 79 | Irving Houghton | 24 | Son | Clerk | Massachusetts |
| 80 | Leonard Houghton | 21 | Son | Carpenter | Massachusetts |
Pedigree Summary
John
Gen 1 · 5 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)