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Mary Mclean — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Mclean across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 12-person household.
Age 11
b. ~1929
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | McLean |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1929 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ann Mclean | Daughter | — | 1 | ~1939 |
| Mary Mclean | Daughter | — | 11 | ~1929 |
| Isabella Mclean | Daughter | — | 16 | ~1924 |
| Kathleen Mclean | Daughter | — | 5 | ~1935 |
| John Mclean | Head | — | 43 | ~1897 |
| Nora Harrington | Other | — | 90 | ~1850 |
| James Mclean | Son | — | 14 | ~1926 |
| John Mclean | Son | — | 19 | ~1921 |
| Hugh Mclean | Son | — | 17 | ~1923 |
| Lawrence Mclean | Son | — | 9 | ~1931 |
| Robert Mclean | Son | — | 6 | ~1934 |
| Mary Mclean | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Kings, New …
Daughter, age 1
Kings, New York · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLean |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Scotland |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Daughter, age 11
Kings-County, New York · implied b. ~1929 — 12 household members
| Surname | McLean |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Highest Grade | 5 |
| 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 Mclean across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mclean
Daughter · 1940 · age 11 · b. ~1929 · New York
★ You are viewing this record
Sibling
Isabella Mclean
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Mclean
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mclean
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Mclean
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Mclean
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mclean
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mclean
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Mclean
Sibling · 1940 · age 1
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-t0627-02567-00878)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Tierney | 59 | Wife | — | Irish Free State |
| 2 | Albert Parsons | 65 | Head | Machinist | Sweden |
| 3 | Maria Parsons | 60 | Wife | — | Sweden |
| 4 | Jacob Medick | 43 | Head | Iron Worker | Austria |
| 5 | Amelia Medick | 36 | Wife | — | New York |
| 6 | Martha Medick | 16 | Daughter | — | New York |
| 7 | John Medick | 14 | Son | — | New York |
| 8 | Walter Medick | 13 | Son | — | New York |
| 9 | Janet Medick | 8 | Daughter | — | New York |
| 10 | Mildred Medick | 3 | Daughter | — | New York |
| 11 | Alexander Sondor | 36 | Head | Laborer | Hungary |
| 12 | Sarah Sondor | 36 | Wife | — | New York |
| 13 | Doris Sondor | 13 | Daughter | — | New York |
| 14 | Edward Sondor | 10 | Son | — | New York |
| 15 | Catherine Sondor | 8 | Daughter | — | New York |
| 16 | Anne Sondor | 1 | Daughter | — | New York |
| 17 | Katherine Scott | 59 | Mother-in-law | — | New York |
| 18 | George Dahms | 21 | Head | Truck Helper | New York |
| 19 | Mary Dahms | 22 | Wife | Saleswoman | New York |
| 20 | Gustaf Dahms | 72 | Father | — | Hungary |
| 21 | Henry Bergman | 38 | Head | Carpenter | New York |
| 22 | Mabel Bergman | 36 | Wife | — | Norway |
| 23 | Barbara Bergman | 7 | Daughter | — | New York |
| 24 | John Mclean | 43 | Head | Inspector | New York |
| 25 | Mary Mclean | 43 | Wife | — | New York |
| 26 | John Mclean | 19 | Son | New Worker | New York |
| 27 | Hugh Mclean | 17 | Son | Mail Clerk | New York |
| 28 | Isabella Mclean | 16 | Daughter | — | New York |
| 29 | James Mclean | 14 | Son | — | New York |
| 30 | Mary Mclean THIS PERSON | 11 | Daughter | — | New York |
| 31 | Lawrence Mclean | 9 | Son | — | New York |
| 32 | Robert Mclean | 6 | Son | — | New York |
| 33 | Kathleen Mclean | 5 | Daughter | — | New York |
| 34 | Ann Mclean | 1 | Daughter | — | New York |
| 35 | Nora Harrington | 90 | Boarder | — | New York |
| 36 | Mary Mclean | 45 | Head | Beautician | Penn. |
| 37 | Edward Mallett | 51 | Head | Bookkeeper | Penn. |
| 38 | Mary Mallett | 44 | Wife | — | New York |
| 39 | Richard Mallett | 22 | Son | Stock Clerk | New York |
| 40 | George Schnoor | 79 | Father-in-law | — | Germany |
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)