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Mary Leonard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Leonard across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 3-person household.
Age 70
b. ~1870
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | New York City |
| Est. Birth Year | ~1870 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Anna Leonard | Daughter | — | 28 | ~1912 |
| Terence Leonard | Head | — | 73 | ~1867 |
| Mary Leonard | Spouse | — | 70 | ~1870 |
Census Appearances
1900
New York, …
Spouse, age 33
New York, New York · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Maggie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Jan |
| Birth Year | 1867 |
| Year of Immigration | 1887 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
New York, …
Other, age 42
New York, New York · implied b. ~1868 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Mabel |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Children Born | 2 |
| Children Living | 2 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | General Work |
| Industry | General Work |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Kings, New …
Other, age 51
Kings, New York · implied b. ~1869 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Housekeeper |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Housework |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Kings, New …
Other, age 61
Kings, New York · implied b. ~1869 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Kings-County, New …
Spouse, age 70
Kings-County, New York · implied b. ~1870 — 3 household members
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 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 Leonard across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Leonard
Spouse · 1940 · age 70 · b. ~1870 · New York
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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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02600-00361)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Scott | 46 | Head | Mail Carrier | New York |
| 2 | Florence Scott | 46 | Wife | Investigator | New York |
| 3 | Hugh Sullivan | 40 | Head | Linotyper | New York |
| 4 | Margaret Sullivan | 30 | Wife | — | New York |
| 5 | Richard Sullivan | 2 | Son | — | New York |
| 6 | Terence Leonard | 73 | Head | Watchman | Ireland |
| 7 | Mary Leonard THIS PERSON | 70 | Wife | — | Ireland |
| 8 | Anna Leonard | 28 | Daughter | Stenographer | New York |
| 9 | Reuben A. Bull | 68 | Head | On Pension | Maryland |
| 10 | Maud A. Webb | 59 | Cousin | — | New York |
| 11 | Lena B. Ready | 50 | Head | — | New York |
| 12 | Jr. Overton | 29 | Son | Statistician | New York |
| 13 | William Alexander | 54 | Head | Postman | New York |
| 14 | Bertha Alexander | 48 | Wife | — | New York |
| 15 | David Alexander | 25 | Son | Teacher | New York |
| 16 | Lafayette Alexander | 24 | Son | Clerk | New York |
| 17 | Jeanette Alexander | 19 | Daughter | — | New York |
| 18 | Annie Solomon | 78 | Mother-in-law | — | Germany |
| 19 | Max Ottinger | 37 | Head | Salesman | New York |
| 20 | Adelaide Ottinger | 35 | Wife | Collector Real Est | New York |
| 21 | Harold Richard Ottinger | 11 | Son | — | New York |
| 22 | Pauline Stanislaus | 24 | Maid | — | Pennsylvania |
| 23 | Yetta Nagler | 70 | Head | — | Austria |
| 24 | Sarah Nagler | 40 | Daughter | Clerk | Austria |
| 25 | George Goodman | 62 | Head | — | New York |
| 26 | Eva Goodman | 53 | Wife | — | New York |
| 27 | Leon Goodman | 30 | Son | Optician | New York |
| 28 | Morris Gelfand | 57 | Head | Presser | Russia |
| 29 | Esther Gelfand | 43 | Wife | — | Russia |
| 30 | Benjamin Gelfand | 21 | Son | — | New York |
| 31 | Clara Gelfand | 19 | Daughter | — | Romania |
| 32 | Adel Gelfand | 18 | Daughter | Office Work | Romania |
| 33 | Jeanette Londoner | 34 | Lodger | Saleslady | New York |
| 34 | William Atkins | 55 | Head | Pattern Dept | Austria |
| 35 | Dora Atkins | 54 | Wife | — | New York |
| 36 | Shirley Atkins | 15 | Daughter | — | New York |
| 37 | Charles Leary | 61 | Head | Official | New York |
| 38 | Mary Leary | 82 | Mother | — | New York |
| 39 | Samuel Scherman | 40 | Head | Selling Executive | New York |
| 40 | Edith Scherman | 40 | Wife | — | 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)