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Mary Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this Mary Mahoney across the 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 4-person household.
Age 77
b. ~1863
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Worcester |
| 1935 Residence (County) | Worcester |
| Naturalization Status | First papers filed |
| Additional Details | |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Worcester |
| Est. Birth Year | ~1863 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Teresa Mahoney | Daughter | — | 45 | ~1895 |
| Mary Mahoney | Head | — | 77 | ~1863 |
| Catherine Hamel | Other | — | 67 | ~1873 |
| Joanna Donovan | Other | — | 75 | ~1865 |
Census Appearances
1920
Worcester, Massachusetts
Spouse, age 58
Worcester, Massachusetts · implied b. ~1862 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1875 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1877 |
| Birthplace (normalized) | ireland |
1930
Worcester, Massachusetts
Spouse, age 65
Worcester, Massachusetts · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Worcester-County, Massachusetts
Head, age 77
Worcester-County, Massachusetts · implied b. ~1863 — 4 household members
| Surname | Mahoney |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Worcester |
| 1935 Residence (County) | Worcester |
| Naturalization Status | First papers filed |
| Highest Grade | 0 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Mary Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mahoney
Head · 1940 · age 77 · b. ~1863 · 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 — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01716-00111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Stavis, George Scheurer | 45 | Boarder | — | Mass |
| 42 | Stavis, William Scheurer | 33 | Boarder | — | Mass |
| 44 | George J. Bernard | 55 | Head | Carpenter | Canada |
| 45 | Florence Bernard | 49 | Wife | — | Mass |
| 46 | Georgia Bernard | 18 | Daughter | — | Mass |
| 47 | Bernard Bernard | 12 | Son | — | Mass |
| 48 | Victor Bernard | 7 | Son | — | Mass |
| 49 | Diana Rock | 63 | Head | Corset Worker | Mass |
| 50 | Rose A. Rock | 43 | Sister | Operator | Mass |
| 51 | Laura Rock | 39 | Sister | Operator | Mass |
| 52 | Henry Cummings | 65 | Head | Operator | Mass |
| 53 | Maria Cummings | 62 | Wife | — | Mass |
| 54 | Morris Cavanaugh | 40 | Head | Driver | Mass |
| 55 | Anna Cavanaugh | 36 | Wife | — | Mass |
| 56 | Barbara A. Cavanaugh | 8 | Daughter | — | Mass |
| 57 | John Mcweeney | 65 | Head | — | Ireland |
| 58 | Elizabeth Mcweeney | 75 | Wife | — | Ireland |
| 59 | Frank A. Beggs | 72 | Head | — | Ohio |
| 60 | Ulysses Beggs | 68 | Brother | — | Kentucky |
| 61 | Elizabeth Beggs | 30 | Daughter | Bookkeeper | Massachusetts |
| 62 | Patrick O'Connor | 50 | Head | Packer | Ireland |
| 63 | Mary O'Connor | 42 | Wife | — | Ireland |
| 64 | John O'Connor | 24 | Son | Shoe Worker | Mass |
| 65 | Francis O'Connor | 22 | Son | Oil Business | Mass |
| 66 | James O'Connor | 18 | Son | — | Mass |
| 67 | Mary O'Connor | 12 | Daughter | — | Mass |
| 68 | Helen O'Connor | 8 | Daughter | — | Mass |
| 69 | Cornelius O'Connor | 17 | Son | — | Mass |
| 70 | Edgar Benson | 43 | Head | Shoe Cutter | Maine |
| 71 | Anna Benson | 31 | Wife | Shoe Stitcher | Mass |
| 72 | Dorothy Benson | 12 | Daughter | — | Mass |
| 73 | Raymond Benson | 11 | Son | — | Mass |
| 74 | Mary Mahoney THIS PERSON | 77 | Head | — | Ireland |
| 75 | Teresa Mahoney | 45 | Daughter | Servant | Mass |
| 76 | Joanna Donovan | 75 | Sister | — | Ireland |
| 77 | Catherine Hamel | 67 | Sister | — | Mass |
| 78 | James A. Mahoney | 48 | Head | Laborer | Mass |
| 79 | Catherine Mahoney | 47 | Wife | — | Massachusetts |
| 80 | James H. Mahoney | 21 | Son | — | Mass |
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)