MC
Mary Cooper — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Kings, New York
Our Model Tree links this Mary Cooper across the 1920, 1930 and 1940 US Censuses in Kings, New York (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 6-person household.
Age 51
b. ~1879
Female
Head
Born: New York
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Kings, New York |
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New York |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Radio Set | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Brooklyn Borough |
| Est. Birth Year | ~1879 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Marion De Sandis | Daughter | — | 20 | ~1910 |
| Mary Cooper | Head | — | 51 | ~1879 |
| Edward De Sandis | Other | — | 25 | ~1905 |
| Thomas Cooper | Son | — | 17 | ~1913 |
| Charles Cooper | Son | — | 17 | ~1913 |
| John Cooper | Son | — | 26 | ~1904 |
Census Appearances
1920
Kings, New …
Spouse, age 40
Kings, New York · implied b. ~1880 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Head, age 51
Kings, New York · implied b. ~1879 — 6 household members
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Radio Set | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Spouse, age 63
Kings-County, New York · implied b. ~1877 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| Occupation | 0 |
| Highest Grade | No 8 |
| 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 Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Cooper
Head · 1930 · age 51 · b. ~1879 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Kings, New York
Open full size
1930 US Federal Census — Kings, New York
Page Contents
46 people indexed on this census page (ia:1930:newyorkcensus00reel1537:0261)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Roma G. Griffin | 23 | Daughter | — | Indiana |
| 2 | Charles A. Miller | 43 | Head | Machinist | Virginia |
| 3 | Florence Miller | 34 | Wife-H | — | New York |
| 4 | Mary Cooper THIS PERSON | 51 | Head | — | New York |
| 5 | John H. Cooper | 26 | Son | Clerk | New York |
| 6 | Charles Cooper | 17 | Son | Clerk | New York |
| 7 | Thomas Cooper | 17 | Son | Splicer'S | New York |
| 8 | Edward De Sandis | 25 | Son-in-law | Clerk | New Jersey |
| 9 | Marion De Sandis | 20 | Daughter | — | Connecticut |
| 10 | Cecelia A. O'Connor | 66 | Head | — | New York |
| 11 | Cecelia W. O'Connor | 37 | Daughter | Operator | New York |
| 12 | William F. O'Connell | 60 | Head | Messenger | New York |
| 13 | Anna R. O'Connell | 62 | Wife-H | — | New York |
| 14 | Gertrude O'Connell | 24 | Daughter | Filling Clerk | New York |
| 15 | Marietta Markley | 62 | Head | — | Montana |
| 16 | Edward Markley | 34 | Son | Artist | Ohio |
| 17 | Dorothy Webster | 30 | Niece | Housework | Ohio |
| 18 | Albert Webster | 32 | Niece's Husband | Salesman | England |
| 19 | Elizabeth Webster | 2 | Daughter | — | Ohio |
| 20 | Charlotte Webster | 1 | Daughter | — | Ohio |
| 21 | Thomas Lambert | 38 | Head | Transfer | New York |
| 22 | May Lambert | 34 | Wife-H | — | New York |
| 23 | Thomas Jr. Lambert | 13 | Son | — | New York |
| 24 | Eleanor Lambert | 8 | Daughter | — | New York |
| 25 | Donald Lambert | 5 | Son | — | New York |
| 26 | James Lambert | 1 | Son | — | New York |
| 27 | Anna Rafferty | 66 | Mother-in-law | Housework | Irish Free State |
| 28 | George Reble | 74 | Head | Clerk | New York |
| 29 | Anna Reble | 38 | Wife-H | — | New York |
| 30 | Viola Reble | 21 | Daughter | Adjuster | New York |
| 31 | George Reble | 19 | Son | Clerk | New York |
| 32 | Robert Reble | 17 | Son | Clerk | New York |
| 33 | Arthur Reble | 14 | Son | — | New York |
| 38 | Henrietta Halley | 40 | Head | Forlady | New York |
| 39 | Ethel-Bell Halley | 14 | Daughter | — | New York |
| 40 | Luella Halley | 62 | Mother-in-law | Housework | New York |
| 41 | Cora Halley | 64 | Aunt-in-law | Assembler | New York |
| 42 | Edna Mittens | 44 | Head | — | Rhode Island |
| 43 | Walter Maine | 26 | Son | Chauffeur | Connecticut |
| 44 | George Brandt | 29 | Head | Chauffeur | New York |
| 45 | Catherine Brandt | 29 | Wife-H | — | New York |
| 46 | Marion Brandt | 7 | Daughter | — | New York |
| 47 | George Jr. Brandt | 5 | Son | — | New York |
| 48 | Francis Brandt | 1 | Son | — | New York |
| 49 | Nils Lofstrom | 32 | Head | Painter | Sweden |
| 50 | Catherine Lofstrom | 22 | Wife-H | — | New York |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)