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Thomas Fitzgerald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Thomas Fitzgerald across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Michael & Grace — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Fitzgerald |
| Given Name | Thomas Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Wilmington Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 150 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Wilmington Town |
| Est. Birth Year | ~1915 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Fitzgerald | Head | — | 49 | ~1891 |
| Thomas Fitzgerald | Son | — | 25 | ~1915 |
| Arthur Fitzgerald | Son | — | 18 | ~1922 |
| Patrick Fitzgerald | Son | — | 27 | ~1913 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 6
Middlesex, Massachusetts · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Thomas |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 16
Middlesex, Massachusetts · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fitzgerald |
| Given Name | Thomas F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| 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
Middlesex-County, Massachusetts
Son, age 25
Middlesex-County, Massachusetts · implied b. ~1915 — 4 household members
| Surname | Fitzgerald |
| Given Name | Thomas Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Wilmington Town |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 150 |
| Highest Grade | Hs 1 |
| 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 Thomas Fitzgerald across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Fitzgerald (~0.92 confidence) and mother Grace Fitzgerald (~0.92 confidence) and mother Mary Fitzgerald (~0.92 confidence) and father Thomas Fitzgerald (~0.92 confidence) and mother Elizabeth Fitzgerald (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Fitzgerald
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Grace Fitzgerald
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Fitzgerald
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Thomas Fitzgerald
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Fitzgerald
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Fitzgerald
Son · 1940 · age 25 · b. ~1915 · Massachusetts
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Sibling
Patrick Fitzgerald
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Fitzgerald
Sibling · 1940 · age 18
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-t0627-01621-00577)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert E. Arsenault | 6 | Grandson | — | Massachusetts |
| 2 | Albert J. Arsenault | 5 | Grandson | — | Massachusetts |
| 3 | David E. Arsenault | 3 | Grandson | — | Massachusetts |
| 4 | Anthony Balkus | 54 | Head | Farmer | Lithuania |
| 5 | Jennie A. Balkus | 46 | Wife | — | Lithuania |
| 6 | Florence A. Balkus | 21 | Daughter | Secretary | Massachusetts |
| 7 | Jennie L. Balkus | 16 | Daughter | — | Massachusetts |
| 8 | Frank Balkus | 14 | Son | — | Massachusetts |
| 9 | Albert Balkus | 12 | Son | — | Massachusetts |
| 10 | William Balkus | 10 | Son | — | Massachusetts |
| 11 | Mary A. Miller | 74 | Head | — | Lithuania |
| 12 | Mark J. Miller | 47 | Son | Cook | England |
| 13 | Joseph P. Miller | 44 | Son | Mechanic'S Asst. | England |
| 14 | John A. Miller | 39 | Son | Painter | England |
| 15 | Herman D. Ingersoll | 30 | Head | Electrician | Massachusetts |
| 16 | Gertrude Ingersoll | 27 | Wife | — | Massachusetts |
| 17 | Herman D. Ingersoll | 8 | Son | — | Massachusetts |
| 18 | Robert Ingersoll | 7 | Son | — | Massachusetts |
| 19 | Rita Ingersoll | 6 | Daughter | — | Massachusetts |
| 20 | Evelyn Ingersoll | 5 | Daughter | — | Massachusetts |
| 21 | Richard A. Ingersoll | 4 | Son | — | Massachusetts |
| 22 | Elizabeth L. Adams | 52 | Head | — | Massachusetts |
| 23 | Laura L. Adams | 26 | Daughter | Secretary | Massachusetts |
| 24 | Patricia Davis | 15 | Boarder | — | Pennsylvania |
| 25 | Leon H. Boyter | 36 | Head | Chauffeur | Canada English |
| 26 | Melba Boyter | 36 | Wife | — | Massachusetts |
| 27 | William Boyter | 17 | Son | New Worker | Massachusetts |
| 28 | Phyllis Boyter | 11 | Daughter | — | Massachusetts |
| 29 | June Boyter | 10 | Daughter | — | Massachusetts |
| 30 | Leon Boyter | 5 | Son | — | Massachusetts |
| 31 | Madeline Boyter | 4 | Daughter | — | Massachusetts |
| 32 | James Lagomarsino | 51 | Head | Laborer | Italy |
| 33 | George H. Soule | 49 | Head | Carpenter | Maine |
| 34 | Ola C. Soule | 47 | Wife | — | Sweden |
| 35 | Charles H. Soule | 17 | Son | — | Massachusetts |
| 36 | Robert E. Soule | 11 | Son | — | Massachusetts |
| 37 | Elizabeth R. Fitzgerald | 49 | Head | — | Canada English |
| 38 | Thomas Leo Fitzgerald THIS PERSON | 25 | Son | Laborer | Massachusetts |
| 39 | Patrick Fitzgerald | 27 | Son | Laborer | Massachusetts |
| 40 | Arthur Fitzgerald | 18 | Son | Laborer | Massachusetts |
Pedigree Summary
Thomas + 2 siblings
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)