MC
Mary Cochran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Cochran across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a spouse (b.~1870), then head of a 4-person household.
Age 70
b. ~1870
Female
Spouse
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Cochran |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1870 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joseph Cochran | Head | — | 69 | ~1871 |
| Frank Cunningham | Other | — | 46 | ~1894 |
| Joseph Cochran | Son | — | 30 | ~1910 |
| Mary Cochran | Spouse | — | 70 | ~1870 |
Census Appearances
1920
Kings, New …
Spouse, age 48
Kings, New York · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | Maybell |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Spouse, age 59
Kings, New York · implied b. ~1871 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | May B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 24 |
| 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 70
Kings-County, New York · implied b. ~1870 — 4 household members
| Surname | Cochran |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Highest Grade | Hs 4 |
| 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 Cochran 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 Cochran
Spouse · 1940 · age 70 · b. ~1870 · New York
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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-t0627-02577-00030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wolf Pfefferkorn | 55 | Head | — | Austria |
| 2 | Jane Pfefferkorn | 53 | Wife | — | Austria |
| 3 | Rebecca Pfefferkorn | 19 | Daughter | Jr Librarian | New York |
| 4 | Connell Dugan | 49 | Lodger | Sand Hog | New York |
| 5 | James Boyle | 25 | Lodger | Porter | Scotland |
| 6 | Frank Lester | 41 | Lodger | Storer | Irish Free State |
| 7 | Arthur W. Young | 59 | Lodger | Chauffeur | Mass |
| 8 | Sydney Bergault | 29 | Lodger | Accountant | New York |
| 9 | Ethel Sander | 23 | Lodger | Counter-Girl | Germany |
| 10 | Anna Granny | 33 | Lodger | Counter-G | Germany |
| 11 | Thomas E. Pringle | 44 | Head | Adjuster | New Jersey |
| 12 | Marie M. Pringle | 43 | Wife | — | New York |
| 13 | John M. Pringle | 18 | Son | Clerk | New York |
| 14 | Alphonse E. Pringle | 16 | Son | — | New York |
| 15 | Joseph E. Cochran | 69 | Head | Clerk | New York |
| 16 | Mary Cochran THIS PERSON | 70 | Wife | — | New York |
| 17 | Joseph Cochran | 30 | Son | — | New York |
| 18 | Frank Cunningham | 46 | Lodger | Fireman | Penn |
| 19 | Joseph O'Connor | 65 | Head | — | New York |
| 20 | Edward O'Connor | 68 | Brother | — | New York |
| 21 | Anna Mahoney | 70 | Head | — | New York |
| 22 | Thomas Hutchinson | 72 | Lodger | — | New York |
| 23 | Al Rose | 42 | Lodger | — | New York |
| 24 | Louis Weiss | 70 | Lodger | — | New York |
| 25 | Granville Lusby | 40 | Lodger | Repairman | New York |
| 26 | Marie Lusby | 38 | Wife | — | Canada-Eng |
| 27 | Rhodoric Lusby | 6 | Son | — | New York |
| 28 | Malcolm Lusby | 3 | Son | — | New York |
| 29 | Joseph Bastido | 39 | Lodger | Guard | New York |
| 30 | Samuel Walker | 24 | Lodger | Recreational Asst | New York |
| 31 | Alex Boyle | 35 | Lodger | — | Mass |
| 32 | John Bakley | 32 | Head | Driver | New Jersey |
| 33 | Essie Bakley | 31 | Wife | Beautician | S. Carolina |
| 34 | Arthur Killinger | 44 | Head | Service Man | Virginia |
| 35 | Thelma Miller | 25 | Neice | Steno | Ohio |
| 36 | Alexander Heilam | 22 | Lodger | Mechanical | Scotland |
| 37 | Patrick O'Connor | 47 | Lodger | Plasterer | Eire |
| 38 | Harry Walkowick | 43 | Lodger | Bartender | Germany |
| 39 | Dorothea Rose | 74 | Head | — | New York |
| 40 | Joseph Rafter | 46 | Head | — | New York |
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)