TM
Thomas Mcmahon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Thomas Mcmahon across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 6-person household.
Age 54
b. ~1886
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Tucker |
| Industry | Leather |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Tucker |
| Township / Ward | Salem City |
| Est. Birth Year | ~1886 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Ralph Mcmahon | Son | — | 27 | ~1913 |
| Elizabeth Mcmahon | Spouse | — | 52 | ~1888 |
| Alice Mcmahon | Daughter | — | 24 | ~1916 |
| Catherine Mcmahon | Daughter | — | 18 | ~1922 |
| Thomas Mcmahon | Head | — | 54 | ~1886 |
| Helen Mcmahon | Other | — | 57 | ~1883 |
Census Appearances
1920
Essex, Massachusetts
Head, age 34
Essex, Massachusetts · implied b. ~1886 — 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 | 34 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | Laster |
| Industry | Shoe shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Head, age 44
Essex, Massachusetts · implied b. ~1886 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 20 |
| Father's Birthplace | New York |
| Mother's Birthplace | Irish Free State |
| Occupation | Foreman |
| Industry | shoe Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Radio Set | R |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Head, age 54
Essex-County, Massachusetts · implied b. ~1886 — 6 household members
| Surname | McMahon |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Salem City |
| 1935 Residence (County) | Essex |
| Occupation | Tucker |
| Industry | Leather |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 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 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 54 · b. ~1886 · Massachusetts
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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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01589-00565)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Murdock | 28 | Head | Presser | Massachusetts |
| 2 | Marion Murdock | 25 | Wife | — | Massachusetts |
| 3 | Edith Murdock | 5 | Daughter | — | Massachusetts |
| 4 | Barbara Murdock | 4 | Daughter | — | Massachusetts |
| 5 | Audrey Murdock | 3 | Daughter | — | Massachusetts |
| 6 | Virginia Murdock | 1 | Daughter | — | Massachusetts |
| 7 | Nancy Murdock | 0 | Daughter | — | Massachusetts |
| 8 | Joseph Ranno | 22 | Boarder | Laborer | Massachusetts |
| 9 | Helen Ranno | 23 | Boarder | — | Massachusetts |
| 10 | Rose Marie Ranno | 0 | Boarder | — | Massachusetts |
| 11 | Arthur C. Moore | 33 | Head | General | Massachusetts |
| 12 | Arline M. Moore | 33 | Wife | Waitress | Massachusetts |
| 13 | Marilyn Moore | 9 | Daughter | — | Massachusetts |
| 14 | Arthur C. Jr. Moore | 5 | Son | — | Massachusetts |
| 15 | Thomas Mcmahon THIS PERSON | 54 | Head | Tucker | Massachusetts |
| 16 | Elizabeth Mcmahon | 52 | Wife | Cleaning | Massachusetts |
| 17 | Ralph Mcmahon | 27 | Son | Tacker | Massachusetts |
| 18 | Alice Mcmahon | 24 | Daughter | Sewing | Massachusetts |
| 19 | Catherine Mcmahon | 18 | Daughter | Neck Maker | Massachusetts |
| 20 | Helen Mcmahon | 57 | Sister | Temper | Eire |
| 21 | Ignatz Bucko | 52 | Head | Pressman | Poland |
| 22 | Veronica Bucko | 45 | Wife | Clean Machine | Poland |
| 23 | Bernard Bucko | 25 | Son | Health C.C. | Massachusetts |
| 24 | Sophie Bucko | 20 | Daughter | Homework | Massachusetts |
| 25 | Alfreda Bucko | 19 | Daughter | Special | Massachusetts |
| 26 | Thaddeus Bucko | 14 | Son | — | Massachusetts |
| 27 | Irene Bucko | 11 | Daughter | — | Massachusetts |
| 28 | Veronica Bucko | 9 | Daughter | — | Massachusetts |
| 29 | Albert Bucko | 7 | Son | — | Massachusetts |
| 30 | Teddy Rocco | 49 | Head | Cutting Machine | Turkey |
| 31 | Irene Rocco | 35 | Wife | Taping | Massachusetts |
| 32 | Mary Rocco | 5 | Daughter | — | Massachusetts |
| 33 | John Polemenako | 59 | Head | Buffing | Greece |
| 34 | Mary Polemenako | 59 | Wife | — | Greece |
| 35 | Anna Polemenako | 27 | Daughter | Seasoner | Massachusetts |
| 36 | Beatrice Polemenako | 25 | Daughter | Sprayer | Massachusetts |
| 37 | James Polemenako | 24 | Son | Trimmer | Massachusetts |
| 38 | Peter Polemenako | 23 | Son | Cellar | Massachusetts |
| 39 | John Polemenako | 19 | Son | — | Massachusetts |
| 40 | Thomas Polemenako | 17 | Daughter | — | Massachusetts |
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)