MK
Mary Kerr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Kerr across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Female
Daughter
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Waitress |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Waitress |
| Township / Ward | New York City |
| Est. Birth Year | ~1917 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kerr | Daughter | — | 23 | ~1917 |
| Annie Kerr | Head | — | 54 | ~1886 |
| John Kerr | Son | — | 27 | ~1913 |
| James Kerr | Son | — | 20 | ~1920 |
| Helen Kerr | Daughter | — | 25 | ~1915 |
Census Appearances
1930
Kings, New …
Daughter, age 13
Kings, New York · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1920 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Kings-County, New …
Daughter, age 23
Kings-County, New York · implied b. ~1917 — 5 household members
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Occupation | Waitress |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 900 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Kerr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kerr
Daughter · 1940 · age 23 · b. ~1917 · New York
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Sibling
James Kerr
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kerr
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kerr
Sibling · 1940 · age 27
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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
17 people indexed on this census page (nara:1940:m-t0627-02568-00348)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Moriarty | 51 | Head | Guard | New York |
| 2 | Lucille Moriarty | 43 | Wife | — | New York |
| 3 | Dorothy Moriarty | 15 | Daughter | Sales Girl | New York |
| 4 | George Moriarty | 13 | Son | — | New York |
| 5 | John Moriarty | 10 | Son | — | New York |
| 6 | John Collins | 49 | Head | Reliefman | New York |
| 7 | Mary Collins | 40 | Wife | — | Scotland |
| 8 | John J Collins | 25 | Son | — | New York |
| 9 | Marie Collins | 15 | Daughter | — | New York |
| 10 | Annie Kerr | 54 | Head | — | Scotland |
| 11 | John Kerr | 27 | Son | Blue Prints | Scotland |
| 12 | Helen Kerr | 25 | Daughter | — | Scotland |
| 13 | Mary Kerr THIS PERSON | 23 | Daughter | Waitress | Scotland |
| 14 | James Kerr | 20 | Son | Messenger | Scotland |
| 15 | Hans Swatker | 57 | Head | — | Germany |
| 16 | Meta Swatker | 56 | Wife | — | Germany |
| 17 | Swatker | None | — | — | — |
Related Census Records
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)