MF
Mary Finn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Finn across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Finn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Brooklyn Borough |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Brooklyn Borough |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| John Finn | Head | — | 52 | ~1888 |
| Harold Finn | Son | — | 17 | ~1923 |
| Mollie Finn | Spouse | — | 48 | ~1892 |
| Monica Finn | Daughter | — | 14 | ~1926 |
| John Finn | Son | — | 16 | ~1924 |
| Mary Finn | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Kings, New …
Daughter, age 8
Kings, New York · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Finna |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Italy |
| Mother's Birthplace | Italy |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Daughter, age 20
Kings-County, New York · implied b. ~1920 — 6 household members
| Surname | Finn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Brooklyn Borough |
| 1935 Residence (County) | Kings |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Finn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Finn
Daughter · 1940 · age 20 · b. ~1920 · New York
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Sibling
Harold Finn
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Monica Finn
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Finn
Sibling · 1940 · age 16
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
40 people indexed on this census page (nara:1940:m-t0627-02565-00580)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Morris Stewart | 65 | Head | — | New York |
| 2 | Taube Stewart | 17 | Son | — | New York |
| 3 | William Smith | 27 | Head | — | Georgia |
| 4 | Texas Smith | 23 | Wife | — | Alabama |
| 5 | Samuel Kleinman | 53 | Head | Plumber | Hungary |
| 6 | Lena Kleinman | 48 | Wife | — | Hungary |
| 7 | Henry Kleinman | 24 | Son | — | Hungary |
| 8 | Gussie Pashtaum | 40 | Wife | — | Austria |
| 9 | Lucille Pashtaum | 9 | Daughter | — | New York |
| 10 | Harry Bellman | 39 | Head | Baker | Russia |
| 11 | Sarah Bellman | 37 | Wife | — | Austria |
| 12 | Rita Bellman | 9 | Daughter | — | New York |
| 13 | Charles Heberman | 53 | Head | Salesman | Russia |
| 14 | Annie Heberman | 53 | Wife | — | Russia |
| 15 | Barney Heberman | 24 | Son | Salesman | New York |
| 16 | William Kirsch | 40 | Head | Presser | Lithuania |
| 17 | Ethel Kirsch | 33 | Wife | — | Hungary |
| 18 | Marian Kirsch | 5 | Daughter | — | New York |
| 19 | Isadore Pakuleky | 62 | Boarder | Handyman | New York |
| 20 | Sadie Pakuleky | 37 | Wife | — | Austria |
| 21 | John Finn | 52 | Head | Watchman | New York |
| 22 | Mollie Finn | 48 | Wife | — | Ireland |
| 23 | Mary Finn THIS PERSON | 20 | Daughter | — | New York |
| 24 | Harold Finn | 17 | Son | — | New York |
| 25 | John Finn | 16 | Son | — | New York |
| 26 | Monica Finn | 14 | Daughter | — | New York |
| 27 | Isaac Ellis | 60 | Head | Painter | Russia |
| 28 | Pearl Ellis | 57 | Wife | — | Russia |
| 29 | Bernard Kaufman | 24 | Son-in-law | Shipping Cl. | New York |
| 30 | Lillian Kaufman | 23 | Daughter | — | Russia |
| 31 | Max Ibartoff | 74 | Head | — | Russia |
| 32 | Ruth Ibartoff | 45 | Daughter | Stenographer | Russia |
| 33 | Louis Ibartoff | 22 | Son | Sheet Worker | New York |
| 34 | Sam Israel | 50 | Head | Presser | Russia |
| 35 | Beckie Israel | 40 | Wife | — | Austria |
| 36 | Ruth Israel | 24 | Daughter | Cleaner | New York |
| 37 | Sonia Israel | 20 | Daughter | Typist | New York |
| 38 | Jack Israel | 11 | Son | — | New York |
| 39 | Lewis Zipkin | 69 | Head | Salesman | Russia |
| 40 | Anna Zipkin | 65 | Wife | — | Russia |
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)