TS
Thomas Simpson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Thomas Simpson across the 1920, 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed), with identified parents Mary — first a head (b.~1905), then head of a 4-person household.
Age 35
b. ~1905
Male
Head
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Simpson |
| Given Name | Thomas C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Patrolman |
| Industry | Police Force |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2500 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Patrolman |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1905 |
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 |
|---|---|---|---|---|
| Gladys Simpson | Spouse | — | 34 | ~1906 |
| Thomas Simpson | Son | — | 11 | ~1929 |
| Fredric Simpson | Son | — | 9 | ~1931 |
| Thomas Simpson | Head | — | 35 | ~1905 |
Census Appearances
1920
Mercer, New …
Son, age 15
Mercer, New Jersey · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Tracer |
| Industry | Metal Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Mercer, New …
Head, age 25
Mercer, New Jersey · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Thomas D |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Office |
| Industry | Porker Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Head, age 35
Mercer-County, New Jersey · implied b. ~1905 — 4 household members
| Surname | Simpson |
| Given Name | Thomas C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Occupation | Patrolman |
| Industry | Police Force |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2500 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Simpson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Simpson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Simpson
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Simpson
Head · 1940 · age 35 · b. ~1905 · New Jersey
★ 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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02356-00471)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Harle | 14 | Son | — | New Jersey |
| 2 | Frank Harle | 12 | Son | — | New Jersey |
| 3 | Patricia Harle | 8 | Daughter | — | New Jersey |
| 4 | Thomas C. Simpson THIS PERSON | 35 | Head | Patrolman | New Jersey |
| 5 | Gladys Simpson | 34 | Wife | — | New Jersey |
| 6 | Thomas Simpson | 11 | Son | — | New Jersey |
| 7 | Fredric Simpson | 9 | Son | — | New Jersey |
| 8 | William Smith | 49 | Head | Chauffeur | New Jersey |
| 9 | Myra Smith | 48 | Wife | — | Pennsylvania |
| 10 | Norman Koller | 29 | Son-in-law | Maintenance | New Jersey |
| 11 | Martha Koller | 25 | Daughter | — | New Jersey |
| 12 | Walter Brodd | 43 | Head | Field Manager | Sweden |
| 13 | Theresa Brodd | 35 | Wife | — | New Jersey |
| 14 | Robbert Brodd | 6 | Son | — | New Jersey |
| 15 | Richard Brodd | 1 | Son | — | New Jersey |
| 16 | George Holland | 33 | Head | Office Work | Pennsylvania |
| 17 | Helen Holland | 36 | Wife | — | Pennsylvania |
| 18 | Joan Holland | 5 | Daughter | — | New Jersey |
| 19 | Rubbert Holland | 3 | Son | — | New Jersey |
| 20 | John W. Scraggs | 66 | Head | Foreman | England |
| 21 | Ada Scraggs | 48 | Wife | — | England |
| 22 | Jean Scraggs | 9 | Daughter | — | New Jersey |
| 23 | Ethel Prosser | 17 | Friend | — | New Jersey |
| 24 | Sally Prosser | 36 | Sister-in-law | Operator | New Jersey |
| 25 | Albert Pfleiderer | 32 | Head | Collector | New Jersey |
| 26 | Martha Pfleiderer | 30 | Wife | — | New Jersey |
| 27 | Gerard Pfleiderer | 9 | Son | — | New Jersey |
| 28 | Louise Pfleiderer | 4 | Daughter | — | New Jersey |
| 29 | Extra Line | None | — | — | — |
| 30 | Clarence Burmeister | 45 | Head | Delivery | New York |
| 31 | Martha Burmeister | 31 | Wife | — | New Jersey |
| 32 | Gordon Burmeister | 13 | Son | — | New Jersey |
| 33 | Frank Drake | 30 | Head | — | New York |
| 34 | Rachel Drake | 27 | Wife | — | Pennsylvania |
| 35 | Marion Drake | 5 | Daughter | — | New York |
| 36 | Edward Blankley | 49 | Head | Typer? | Pennsylvania |
| 37 | Elizabeth Blankley | 35 | Wife | Laborer | New Jersey |
| 38 | Ely Kates | 69 | Father-in-law | — | New Jersey |
| 39 | Frank Sabo | 32 | Head | Coffee Roaster | New Jersey |
Related Census Records
Pedigree Summary
Thomas
Gen 1 · 1 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)