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Mary Leary — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Monroe-County, New York
Our Model Tree links this Mary Leary across the 1930 and 1940 US Censuses in Monroe-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Monroe-County, New York |
| Surname | Leary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Rochester |
| 1935 Residence (County) | Monroe |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Rochester |
| Est. Birth Year | ~1926 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Timothy Leary | Head | — | 47 | ~1893 |
| Margaret Leary | Daughter | — | 16 | ~1924 |
| Helen Leary | Daughter | — | 12 | ~1928 |
| Margaret Leary | Spouse | — | 45 | ~1895 |
| Mary Leary | Daughter | — | 14 | ~1926 |
| Mamie Leary | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Monroe, New …
Daughter, age 4
Monroe, New York · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Monroe-County, New …
Daughter, age 14
Monroe-County, New York · implied b. ~1926 — 6 household members
| Surname | Leary |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Rochester |
| 1935 Residence (County) | Monroe |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Leary across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Leary
Daughter · 1940 · age 14 · b. ~1926 · New York
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Sibling
Helen Leary
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Leary
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Leary
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Monroe-County, New York
Open full size
1940 US Federal Census — Monroe-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02849-00643)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William E Horan | 57 | Head | Steam Crane Engineer | Andover |
| 42 | Jenny Horan | 56 | Wife | — | Ireland |
| 43 | Elizabeth Horan | 22 | Daughter | Work Office | New York |
| 44 | Margarette Horan | 21 | Daughter | Operator | New York |
| 45 | Bernadine Horan | 19 | Daughter | Office | New York |
| 46 | Teresa Horan | 16 | Daughter | Clerk | New York |
| 47 | Charles Riordan | 30 | Head | — | New York |
| 48 | Julia Riordan | 30 | Wife | — | New York |
| 49 | Norla Riordan | 10 | Daughter | — | New York |
| 50 | Robert Riordan | 8 | Son | — | New York |
| 51 | Ann Riordan | 5 | Daughter | — | New York |
| 52 | James Riordan | 4 | Son | — | New York |
| 53 | Ward Riordan | 3 | Son | — | New York |
| 54 | Beth Riordan | 1 | Daughter | — | New York |
| 55 | Howard Perry | 25 | Lodger | Blacksmith | New York |
| 56 | Helen Perry | 21 | Lodger | Waitress | New York |
| 57 | Ursamus Young | 74 | Head | Nightwatch | New York |
| 58 | Kate Young | 67 | Wife | — | New York |
| 59 | Louise Belle Young | 36 | Daughter | Music Teacher | New York |
| 60 | Head Claire Van Isaac | None | M | Private | — |
| 61 | Hina Claire Van Isaac | 42 | Wife | Housekeeper | Holland |
| 62 | John Claire Van Isaac | 21 | Son | Sheet Metal | New York |
| 63 | Harold Claire Van Isaac | 19 | Son | — | New York |
| 64 | Harry Jr. Schanke | 29 | Head | Truck Driver | New York |
| 65 | Mak Schanke | 29 | Wife | — | New York |
| 66 | Sandra Schanke | 2 | Daughter | — | New York |
| 67 | Margaret Pratt | 40 | Head | Coat Clerk | New York |
| 68 | Betty Pratt | 31 | Sister | Bookkeeper | New York |
| 69 | Timothy Leary | 47 | Head | Bus Driver | Ireland |
| 70 | Margaret Leary | 45 | Wife | — | Ireland |
| 71 | Mamie Leary | 18 | Daughter | — | New York |
| 72 | Margaret Leary | 16 | Daughter | — | New York |
| 73 | Mary Leary THIS PERSON | 14 | Daughter | — | New York |
| 74 | Helen Louise Leary | 12 | Daughter | — | New York |
| 75 | Robert B Macomber | 62 | Head | Engineer | New York |
| 76 | Elizabeth Hilderbrand | 66 | Maid | — | New York |
| 77 | Lodger George Jr. | None | M | Electric | US |
| 78 | Lodger Elanor | None | F | — | US |
| 79 | Minnie Mailander | 71 | Head | — | Germany |
| 80 | Herbert Mailander | 51 | Son | Cashier | 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)