MC
Martha Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Martha Cooper across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 10-person household.
Age 53
b. ~1887
Female
Spouse
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Cooper |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City Brooklyn |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City Brooklyn |
| Est. Birth Year | ~1887 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Cooper | Daughter | — | 19 | ~1921 |
| Ora Cooper | Daughter | — | 21 | ~1919 |
| Martha Cooper | Spouse | — | 53 | ~1887 |
| Roscoe Cooper | Head | — | 50 | ~1890 |
| Dorothy Cooper | Daughter | — | 32 | ~1908 |
| Constance Cooper | Daughter | — | 7 | ~1933 |
| Kenneth Cooper | Son | — | 10 | ~1930 |
| Bernice Cooper | Daughter | — | 16 | ~1924 |
| Stanley Cooper | Son | — | 13 | ~1927 |
| Melvin Cooper | Son | — | 30 | ~1910 |
Census Appearances
1920
Kings, New …
Spouse, age 32
Kings, New York · implied b. ~1888 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Maryland |
| Occupation | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Spouse, age 41
Kings, New York · implied b. ~1889 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 18 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Spouse, age 53
Kings-County, New York · implied b. ~1887 — 10 household members
| Surname | Cooper |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City Brooklyn |
| 1935 Residence (County) | Kings |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 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 Martha 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
Martha Cooper
Spouse · 1940 · age 53 · b. ~1887 · New York
★ You are viewing this record
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-t0627-02598-00348)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Stanley Wyatt | 32 | Head | Postman | New York |
| 42 | Jeanette Wyatt | 26 | Wife | — | New York |
| 43 | Eleanor Wyatt | 14 | Daughter | — | New York |
| 44 | William Jones | 45 | Head | Clerk | Washington D.C. |
| 45 | Dorothy Jones | 35 | Wife | — | Washington D.C. |
| 46 | Elliot Jones | 24 | Roomer | Piece Worker | New Jersey |
| 47 | Roscoe Cooper | 50 | Head | Laborer | New York |
| 48 | Martha Cooper THIS PERSON | 53 | Wife | — | New York |
| 49 | Dorothy Cooper | 32 | Daughter | Domestic | New York |
| 50 | Melvin Cooper | 30 | Son | Shoe Finisher | New York |
| 51 | Ora Cooper | 21 | Daughter | New Worker | New York |
| 52 | Evelyn Cooper | 19 | Daughter | — | New York |
| 53 | Bernice Cooper | 16 | Daughter | — | New York |
| 54 | Stanley Cooper | 13 | Son | — | New York |
| 55 | Kenneth Cooper | 10 | Son | — | New York |
| 56 | Constance Cooper | 7 | Daughter | — | New York |
| 57 | James White | 66 | Head | Laborer | No. Carolina |
| 58 | Penny White | 46 | Wife | — | No. Carolina |
| 59 | Eleonora White | 14 | Daughter | — | New York |
| 60 | Bernard Carpenter | 35 | Head | Barber | No. Carolina |
| 61 | Lurlene Carpenter | 32 | Wife | Laborer | Georgia |
| 62 | Bernard Jr. Carpenter | 13 | Son | — | New York |
| 63 | Lester Carpenter | 12 | Son | — | New York |
| 64 | Muriel Carpenter | 11 | Daughter | — | New York |
| 65 | Herbert Jay Carpenter | 9 | Son | — | New York |
| 66 | Kenneth Carpenter | 7 | Son | — | New York |
| 67 | Shirley Carpenter | 3 | Daughter | — | New York |
| 68 | Dolores Carpenter | 1 | Daughter | — | New York |
| 69 | Ray Watson | 31 | Head | Porter | No. Carolina |
| 70 | Roberta Watson | 23 | Wife | Domestic | No. Carolina |
| 71 | Elizabeth Byrwell | 49 | Head | Domestic | Virginia |
| 72 | Charles Taylor | 40 | Head | Laborer | No. Carolina |
| 73 | Gertrude Hamilton | 30 | Head | — | So. Carolina |
| 74 | Elmer Hamilton | 12 | Son | — | Florida |
| 75 | John H. Hamilton | 11 | Son | — | Florida |
| 76 | George Hamilton | 10 | Son | — | Florida |
| 77 | Cicero Perry | 39 | Roomer | Concret Worker | Georgia |
| 78 | Milford Simpson | 29 | Head | Driver | New York |
| 79 | Gwendolyn Simpson | 27 | Wife | — | New York |
| 80 | Milford Jr. Simpson | 4 | Son | — | New York |
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)