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Mary Leahy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Berkshire-County, Massachusetts
Our Model Tree links this Mary Leahy across the 1930 and 1940 US Censuses in Berkshire-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1875), then head of a 4-person household.
Age 65
b. ~1875
Female
Spouse
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Berkshire-County, Massachusetts |
| Surname | Leahy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Pittsfield |
| 1935 Residence (County) | Berkshire |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Pittsfield |
| Est. Birth Year | ~1875 |
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 |
|---|---|---|---|---|
| Joseph Leahy | Son | — | 35 | ~1905 |
| John Leahy | Head | — | 71 | ~1869 |
| Agnes Leahy | Daughter | — | 33 | ~1907 |
| Mary Leahy | Spouse | — | 65 | ~1875 |
Census Appearances
1930
Berkshire, Massachusetts
Spouse, age 54
Berkshire, Massachusetts · implied b. ~1876 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leahy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Alien |
| Year of Immigration | 1893 |
| Age at First Marriage | 24 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | irish free state |
1940
Berkshire-County, Massachusetts
Spouse, age 65
Berkshire-County, Massachusetts · implied b. ~1875 — 4 household members
| Surname | Leahy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Pittsfield |
| 1935 Residence (County) | Berkshire |
| Naturalization Status | Naturalized |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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 Leahy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Leahy
Spouse · 1940 · age 65 · b. ~1875 · 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 — Berkshire-County, Massachusetts
Open full size
1940 US Federal Census — Berkshire-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01569-00780)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Benz | 9 | daughter | — | Mass |
| 2 | Lester Hunts | 27 | Head | Machine | Mass |
| 3 | Shirley Hunts | 24 | Wife | — | Mass |
| 4 | Nancy Hunts | 3 | daughter | — | Mass |
| 5 | Coughlin James | 56 | Head | Clerk | New York |
| 6 | Edna James | 49 | Wife | — | New York |
| 7 | John James | 55 | brother | Laborer | New York |
| 8 | Arthur Milne | 32 | Head | Salesman | Mass |
| 9 | Sylvia Milne | 27 | Wife | — | Mass |
| 10 | Judith Milne | 7 | daughter | — | Mass |
| 11 | Linda Milne | 5 | daughter | — | Mass |
| 12 | Harry Henry Macdonald | 27 | Head | Driver | Mass |
| 13 | Angeline Macdonald | 26 | Wife | — | Mass |
| 14 | Sheila Macdonald | 1 | daughter | — | Mass |
| 15 | Philip Sarracco | 53 | Head | Shipping | Italy |
| 16 | Mary Sarracco | 46 | Wife | — | Italy |
| 17 | John Sarracco | 27 | Son | Machinist | Mass |
| 18 | Philip Sarracco | 10 | Son | — | Mass |
| 19 | Oscar Dodge | 68 | Head | Contractor | Mass |
| 20 | Millie Dodge | 72 | Wife | Contractor | Mass |
| 21 | Harold Dodge | 42 | Son | — | Mass |
| 22 | John Leahy | 71 | Head | Laborer | Irish Free State |
| 23 | Mary Leahy THIS PERSON | 65 | Wife | — | Irish Free State |
| 24 | Agnes Leahy | 33 | daughter | Overseer | Mass |
| 25 | Joseph Leahy | 35 | Son | Groom | Mass |
| 26 | John Leahy | 39 | Head | Civil Engineer | New York |
| 27 | Ruth Leahy | 35 | Wife | — | Mass |
| 28 | Ruth Leahy | 13 | daughter | — | Mass |
| 29 | John Leahy | 11 | Son | — | Mass |
| 30 | Marjorie Leahy | 9 | daughter | — | Mass |
| 31 | Joseph Gilson | 31 | Head | Horse Trainer | Mass |
| 32 | Ruth Gilson | 28 | Wife | — | Mass |
| 33 | Joan Gilson | 6 | daughter | — | Mass |
| 34 | Carrie Gilson | 2 | daughter | — | Mass |
| 35 | Frank Williamson | 72 | Head | Caretaker | England |
| 36 | Augustus Carlson | 22 | Head | Linotype | Sweden |
| 37 | James Ellery | 43 | Head | Farmer | Mass |
| 38 | Kathryn Ellery | 40 | Wife | — | Pennsylvania |
| 39 | James Ellery | 12 | Son | — | Mass |
| 40 | James Baker | 64 | Head | Salesman | 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)