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William Mcmahon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kent-County, Rhode Island
Our Model Tree links this William Mcmahon across the 1930 and 1940 US Censuses in Kent-County, Rhode Island (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 9-person household.
Age 43
b. ~1897
Male
Head
Born: Rhode Island
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kent-County, Rhode Island |
| Surname | McMahon |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Warwick City |
| 1935 Residence (County) | Kent |
| Additional Details | |
| Occupation | Policeman |
| Industry | City Employee |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 1820 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Policeman |
| Township / Ward | Warwick City |
| Est. Birth Year | ~1897 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mcmahon | Son | — | 18 | ~1922 |
| Kathleen Mcmahon | Daughter | — | 7 | ~1933 |
| Richard Mcmahon | Son | — | 5 | ~1935 |
| Katherine Mcmahon | Spouse | — | 40 | ~1900 |
| William Mcmahon | Head | — | 43 | ~1897 |
| Raymond Mcmahon | Son | — | 9 | ~1931 |
| Alice Mcmahon | Daughter | — | 16 | ~1924 |
| Claire Mcmahon | Daughter | — | 14 | ~1926 |
| Jane Mcmahon | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Kent, Rhode …
Head, age 33
Kent, Rhode Island · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| Age at First Marriage | 23 |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Connecticut |
| Occupation | Police |
| Industry | Town |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Kent-County, Rhode …
Head, age 43
Kent-County, Rhode Island · implied b. ~1897 — 9 household members
| Surname | McMahon |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Warwick City |
| 1935 Residence (County) | Kent |
| Occupation | Policeman |
| Industry | City Employee |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 1820 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 William Mcmahon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Mcmahon
Head · 1940 · age 43 · b. ~1897 · Rhode Island
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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 — Kent-County, Rhode Island
Open full size
1940 US Federal Census — Kent-County, Rhode Island
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03758-00633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alice A. Menard | 36 | Wife | — | Rhode Island |
| 42 | Ernest E. Menard | 4 | Son | — | Rhode Island |
| 43 | Rachael M. Menard | 1 | Daughter | — | Rhode Island |
| 44 | Joseph Capaldi | 58 | Head | Plumbing Inspector | Italy |
| 45 | Barbara A. Capaldi | 54 | Wife | — | Scotland |
| 46 | Albert C. Capaldi | 31 | Son | Civil Engineer | Rhode Island |
| 47 | Margaret C. Capaldi | 30 | Daughter | Social Worker | Rhode Island |
| 48 | Barbara L. Capaldi | 25 | Daughter | Stenographer | Rhode Island |
| 49 | Dorothy A. Capaldi | 19 | Daughter | Stenographer | Rhode Island |
| 50 | Alpha A. Alney | 81 | Head | — | Rhode Island |
| 51 | Estella M. Alney | 74 | Wife | — | Connecticut |
| 52 | Earl A. Alney | 35 | Son | Painter | Rhode Island |
| 53 | William P. Mcmahon THIS PERSON | 43 | Head | Policeman | Rhode Island |
| 54 | Katherine M. Mcmahon | 40 | Wife | — | Rhode Island |
| 55 | William E. Mcmahon | 18 | Son | — | Rhode Island |
| 56 | Alice H. Mcmahon | 16 | Daughter | — | Rhode Island |
| 57 | Claire L. Mcmahon | 14 | Daughter | — | Rhode Island |
| 58 | Jane L. Mcmahon | 12 | Daughter | — | Rhode Island |
| 59 | Raymond Mcmahon | 9 | Son | — | Rhode Island |
| 60 | Kathleen R. Mcmahon | 7 | Daughter | — | Rhode Island |
| 61 | Richard Mcmahon | 5 | Son | — | Rhode Island |
| 62 | Michael Zuchero | 45 | Head | Barber Proprietor | Rhode Island |
| 63 | Gabriel Zuchero | 37 | Wife | — | Italy |
| 64 | Esther R. Zuchero | 17 | Daughter | — | Rhode Island |
| 65 | Correne B. Zuchero | 11 | Daughter | — | Rhode Island |
| 66 | Joseph O. Senecal | 29 | Head | Fireman Locomotive | Rhode Island |
| 67 | Marie Senecal | 27 | Wife | — | Rhode Island |
| 68 | Jean M. Senecal | 5 | Daughter | — | Rhode Island |
| 69 | Jo-Ann J. Senecal | 1 | Daughter | — | Rhode Island |
| 70 | Clifford J. Coutcher | 21 | Head | Laborer Building | Rhode Island |
| 71 | Dorothy M. Coutcher | 20 | Wife | — | Connecticut |
| 72 | Janice C. Coutcher | 2 | Daughter | — | Rhode Island |
| 73 | Andrea Calise | 58 | Head | Machinist Helper | Italy |
| 74 | Frances Calise | 58 | Wife | — | Italy |
| 75 | Frances Calise | 16 | Daughter | — | Rhode Island |
| 76 | Harold L. Showcross | 40 | Head | Machinist | England |
| 77 | Dorothy Showcross | 36 | Wife | — | England |
| 78 | George H. Showcross | 6 | Son | — | Rhode Island |
| 79 | Arthur E. Rowney | 50 | Head | Optical Maker | England |
| 80 | Emily Rowney | 50 | Wife | — | England |
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)