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Thomas Fitzpatrick — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Thomas Fitzpatrick across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Thomas & Helen — first a son (b.~1906), then head of a 7-person household.
Age 34
b. ~1906
Male
Son
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Fitzpatrick |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Salesman |
| Industry | Electric Supply |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1320 |
| Highest Grade | H-4 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Township / Ward | Arlington |
| Est. Birth Year | ~1906 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Fitzpatrick | Daughter | — | 32 | ~1908 |
| John Elliott | Other | — | 28 | ~1912 |
| Thomas Fitzpatrick | Son | — | 34 | ~1906 |
| Helen Fitzpatrick | Head | — | 70 | ~1870 |
| Peter Elliott | Other | — | ~1940 | |
| Mary Elliott | Daughter | — | 33 | ~1907 |
| Rose Fitzpatrick | Daughter | — | 31 | ~1909 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 23
Middlesex, Massachusetts · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzpatrick |
| Given Name | Thomas J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Secretary |
| Industry | Real Estate |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 34
Middlesex-County, Massachusetts · implied b. ~1906 — 7 household members
| Surname | Fitzpatrick |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Middlesex |
| Occupation | Salesman |
| Industry | Electric Supply |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1320 |
| Highest Grade | H-4 |
| 1935 Residence | Massachusetts |
| 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 Thomas 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 Helen Fitzpatrick (~0.92 confidence) and mother Margaret Fitzpatrick (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Fitzpatrick
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Helen Fitzpatrick
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Margaret Fitzpatrick
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Fitzpatrick
Son · 1940 · age 34 · b. ~1906 · Massachusetts
★ You are viewing this record
Sibling
Elizabeth Fitzpatrick
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Elliott
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Fitzpatrick
Sibling · 1940 · age 31
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01601-00523)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ella G. Witham | 52 | Head | Clerk | Massachusetts |
| 2 | Mary A. Witham | 47 | Sister | Billing Clerk | Massachusetts |
| 3 | Carl Zollin | 72 | Head | Paper Cutter | Sweden |
| 4 | Amelia F. Zollin | 75 | Wife | — | Sweden |
| 5 | Frank C. Zollin | 39 | Son | Bookbinder | Massachusetts |
| 6 | Esther A. Zollin | 32 | Daughter | Clerk | Massachusetts |
| 7 | Walter L. Priest | 46 | Head | Machine Designer | Massachusetts |
| 8 | Emily M. Priest | 52 | Wife | — | Massachusetts |
| 9 | Matilda Carlson | 77 | Head | — | Sweden |
| 10 | Jennie M. Carlson | 45 | Daughter | Art Teacher | Massachusetts |
| 11 | Clarence Gavel | 24 | Head | Advertising | Massachusetts |
| 12 | Edith Gavel | 25 | Wife | — | Massachusetts |
| 13 | David Gavel | 2 | Son | — | New Hampshire |
| 14 | Donald Gavel | 1 | Son | — | Massachusetts |
| 15 | Josephine Glover | 70 | Head | — | Ireland |
| 16 | William Glover | 45 | Son | Laborer | Massachusetts |
| 17 | James Palmerino | 41 | Head | Laborer | Italy |
| 18 | Mildred Palmerino | 32 | Wife | — | Massachusetts |
| 19 | John Palmerino | 16 | Son | — | Massachusetts |
| 20 | Edna Palmerino | 14 | Daughter | — | Massachusetts |
| 21 | Joseph Weafer | 46 | Boarder | Handicraft | Massachusetts |
| 22 | William Dillinger | 42 | Head | Pipe Fitter | Illinois |
| 23 | Lillian B. Dillinger | 42 | Wife | — | Massachusetts |
| 24 | Shirley J. Dillinger | 15 | Daughter | — | Massachusetts |
| 25 | Marilyn J. Dillinger | 10 | Daughter | — | Massachusetts |
| 26 | Charles Stewart | 70 | Lodger | Bookkeeping | Massachusetts |
| 27 | Helen Fitzpatrick | 70 | Head | — | Irish Free State |
| 28 | Thomas Fitzpatrick THIS PERSON | 34 | Son | Salesman | Massachusetts |
| 29 | Elizabeth Fitzpatrick | 32 | Daughter | Salesgirl | Massachusetts |
| 30 | Rose L. Fitzpatrick | 31 | Daughter | Operator | Massachusetts |
| 31 | Mary J. Elliott | 33 | Daughter | — | Massachusetts |
| 32 | John Elliott | 28 | Son-in-law | Switchboard Operator | New Hampshire |
| 33 | Peter R. Elliott | 0 | Grandson | — | Massachusetts |
| 34 | Francis Bennett | 32 | Head | Laborer | Massachusetts |
| 35 | Ruth Bennett | 32 | Wife | — | Massachusetts |
| 36 | Francis Bennett | 7 | Son | — | Massachusetts |
| 37 | Thomas Foley | 20 | Brother-in-law | Clerk | Massachusetts |
| 38 | Peter Maiol | 25 | Head | — | Italy |
| 39 | Margaret Maiol | 24 | Wife | — | Italy |
| 40 | Josephine Maiol | 3 | Daughter | Seamstress | Italy |
Related Census Records
Search for Thomas Fitzpatrick
All Thomas Fitzpatrick Census Records Discover Fitzpatrick Family TreePedigree Summary
Thomas + 3 siblings
Gen 1 · 3 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)