TM
Thomas Mcmahon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Thomas Mcmahon across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Timothy & Anna — first a head (b.~1895), then head of a 3-person household.
Age 45
b. ~1895
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | McMahon |
| Given Name | Thomas M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Boro of Brooklyn |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Manager |
| Industry | Garage |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 156 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Manager |
| Township / Ward | Boro Of Brooklyn |
| Est. Birth Year | ~1895 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Helen Mcmahon | Spouse | — | 41 | ~1899 |
| Thomas Mcmahon | Head | — | 45 | ~1895 |
| Edna Mcmahon | Daughter | — | 17 | ~1923 |
Census Appearances
1920
Kings, New …
Son, age 26
Kings, New York · implied b. ~1894 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | Chauffeur |
| Industry | Trucking |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Head, age 36
Kings, New York · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Thomas F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 25 |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | Mover |
| Industry | Moving Van |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Head, age 45
Kings-County, New York · implied b. ~1895 — 3 household members
| Surname | McMahon |
| Given Name | Thomas M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Boro of Brooklyn |
| 1935 Residence (County) | Kings |
| Occupation | Manager |
| Industry | Garage |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 156 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Mcmahon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Timothy Mcmahon (~0.92 confidence) and mother Anna Mcmahon (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Timothy Mcmahon
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Anna Mcmahon
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Mcmahon
Head · 1940 · age 45 · b. ~1895 · New York
★ 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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-02608-00882)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Hempstead | 61 | Head | Superintendent | New York |
| 2 | Margaret Hempstead | 61 | Wife | — | New York |
| 3 | Harold Hempstead | 35 | Son | Electrician | New York |
| 4 | Fred Kraemer | 41 | Head | Stock Clerk | New York |
| 5 | Edmee E Kraemer | 36 | Wife | — | New York |
| 6 | Rudolph Criswell | 46 | Head | Bookkeeper | New York |
| 7 | Clara Criswell | 44 | Sister | Secretary | New York |
| 8 | Edward Gold | 28 | Head | Tinsmith | New York |
| 9 | Mildred Gold | 24 | Wife | Clerk | New York |
| 10 | Harry H Schneider | 43 | Head | Salesman | New York |
| 11 | Helen H Schneider | 35 | Wife | — | New York |
| 12 | Lois Schneider | 6 | Daughter | — | New York |
| 13 | Henry J Backus | 28 | Head | Longshoreman | New York |
| 14 | Alice Backus | 27 | Wife | Secretary | New York |
| 15 | Violet A Backus | 5 | Daughter | — | New York |
| 16 | George Kollmer | 42 | Head | Electrician | New York |
| 17 | Anna Kollmer | 39 | Wife | — | New York |
| 18 | John Kollmer | 20 | Son | News Worker | New York |
| 19 | Henrietta Kollmer | 17 | Daughter | — | New York |
| 20 | Joseph Macgregor | 35 | Head | Clerk | New York |
| 21 | Evelyn Macgregor | 29 | Wife | Asst Director | New York |
| 22 | Martin Boyle | 30 | Head | Motorman | New York |
| 23 | Annabelle Boyle | 30 | Wife | — | New York |
| 24 | Annabelle Boyle | 9 | Daughter | — | New York |
| 25 | Andrew Mccarthy | 55 | Head | Foreman | Eire |
| 26 | Timothy Mccarthy | 31 | Son | Clerk | New York |
| 27 | Charles J Bleasby | 71 | Head | — | New York |
| 28 | Blanche Bleasby | 58 | Wife | Operator Truck | New York |
| 29 | Hugh L Samples | 45 | Son in law | — | Kentucky |
| 30 | Gladys E Samples | 34 | Daughter | — | Canal Zone |
| 31 | Robert Samples | 12 | Grandson | — | Canal Zone |
| 32 | Edward Samples | 9 | Grandson | — | Canal Zone |
| 33 | Arthur Holophy | 46 | Head | Shoe Salesman | New York |
| 34 | Lulu E Holophy | 45 | Wife | — | New York |
| 35 | Arthur C Holophy | 19 | Son | Wholesale Boy | New York |
| 36 | Thomas M Mcmahon THIS PERSON | 45 | Head | Manager | New York |
| 37 | Helen Mcmahon | 41 | Wife | — | New York |
| 38 | Edna L Mcmahon | 17 | Daughter | — | New York |
Related Census Records
Pedigree Summary
Thomas
Gen 1 · 2 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)