TM
Thomas Mcmahon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, New York
Our Model Tree links this Thomas Mcmahon across the 1920, 1930 and 1940 US Censuses in Suffolk-County, New York (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, New York |
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Southampton |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Gardener |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1016 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Gardener |
| Township / Ward | Southampton |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Mcmahon | Head | — | 52 | ~1888 |
| Son Edward | Other | — | — | |
| Son Raymond | Other | — | — | |
| Daughter Cathrine | Other | — | — | |
| Phyllis Allen | Daughter | — | 24 | ~1916 |
| Augusta Mcmahon | Spouse | — | 49 | ~1891 |
| Daughter Doris | Other | — | — | |
| Son Thomas H | Other | — | — |
Census Appearances
1920
Suffolk, New …
Head, age 32
Suffolk, New York · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | Ireland |
| Occupation | Police Officer |
| Industry | Street Duty |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Year of Naturalization | 1914 |
| Birthplace (normalized) | england |
1930
Suffolk, New …
Head, age 42
Suffolk, New York · implied b. ~1888 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 22 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Plaster |
| Industry | Mason |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Eng. |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Suffolk-County, New …
Head, age 52
Suffolk-County, New York · implied b. ~1888 — 8 household members
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Southampton |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Occupation | Gardener |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1016 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | England |
| Birthplace (normalized) | england |
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.
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This person
Anchor record
Thomas Mcmahon
Head · 1940 · age 52 · b. ~1888 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, New York
Open full size
1940 US Federal Census — Suffolk-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02785-00212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frederick Miller | 45 | Head | Manager | Germany |
| 2 | Alice Miller | 43 | Wife | Housewife | Scotland |
| 3 | William Taylor | 38 | Head | Foreman | N. Carolina |
| 4 | Gwinette Taylor | 36 | Wife | Housewife | New York |
| 5 | Dorothy Carney | 10 | Daughter | — | New York |
| 6 | Thomas Mcmahon THIS PERSON | 52 | Head | Gardener | England |
| 7 | Augusta Mcmahon | 49 | Wife | Housewife | New York |
| 8 | Phyllis Allen | 24 | Daughter | Lady'S Maid | New York |
| 9 | Daughter Cathrine | None | F | Real Estate | — |
| 10 | Son Thomas H. | None | M | Private | — |
| 11 | Son Edward | None | M | — | — |
| 12 | Son Raymond | None | M | — | — |
| 13 | Daughter Doris | None | F | — | — |
| 14 | Ralph Venegas | 42 | Head | Electrician | Puerto Rico |
| 15 | Mary Venegas | 37 | Wife | Housewife | New York |
| 16 | Ralph Jr. Venegas | 18 | Son | — | New York |
| 17 | William Venegas | 15 | Son | — | New York |
| 18 | Anna Bohman | 67 | Head | Housewife | Germany |
| 19 | John Bohman | 32 | Son | Clerk | New York |
| 20 | Charles Bohman | 24 | Son | Helper | New York |
| 21 | George Donahue | 29 | Head | Teacher | New Jersey |
| 22 | Anne Elizabeth Donahue | 23 | Wife | Housewife | New York |
| 23 | Alexander Mcguire | 41 | Head | Housewife | New York |
| 24 | Mary Mcguire | 31 | Wife | Housewife | New York |
| 25 | Alexander Jr. Mcguire | 2 | Son | — | New York |
| 26 | Jessie Ritchie | 67 | Head | Housewife | Scotland |
| 27 | Elizabeth Harkness | 43 | Daughter | Housewife | New York |
| 28 | James Harkness | 11 | Son | — | New York |
| 29 | Henry Morken | 44 | Head | Butcher | New York |
| 30 | Margaret Morken | 44 | Wife | Housewife | New York |
| 31 | William Morken | 18 | Son | Pin Boy | New York |
| 32 | Howard Morken | 13 | Son | — | New York |
| 33 | Raymond Conrad | 27 | Head | Mechanic | New York |
| 34 | Evelyn Conrad | 21 | Wife | Clerk | Connecticut |
| 35 | Agnes Williams | 40 | Wife | Housewife | New York |
| 36 | Wilber Miller | 38 | Head | Meter Reader | New York |
| 37 | Della Miller | 45 | Wife | Housewife | Ireland |
| 38 | Arthur Hall | 55 | Head | Bookkeeper | Connecticut |
| 39 | Ruth Hall | 51 | Wife | Housewife | New York |
| 40 | Ruth Elizabeth Hall | 17 | Daughter | Student | New York |
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)