MC
Mary Cowan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Mary Cowan across the 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Cowan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York |
| 1935 Residence (County) | Bronx |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Harriet Cowan | Spouse | — | 49 | ~1891 |
| Mary Cowan | Daughter | — | 20 | ~1920 |
| Ruth Cowan | Daughter | — | 15 | ~1925 |
| Mary Sanford | Other | — | 77 | ~1863 |
| David Cowan | Head | — | 54 | ~1886 |
Census Appearances
1930
New York, …
Daughter, age 9
New York, New York · implied b. ~1921 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowen |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New York |
| 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
Bronx-County, New …
Daughter, age 20
Bronx-County, New York · implied b. ~1920 — 5 household members
| Surname | Cowan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York |
| 1935 Residence (County) | Bronx |
| Hours Worked | 0 |
| Income (1939) | 0 |
| 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 Cowan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cowan
Daughter · 1940 · age 20 · b. ~1920 · New York
★ You are viewing this record
Sibling
Ruth Cowan
Sibling · 1940 · age 15
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 — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02465-00332)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nellie Seebach | 61 | Wife | — | New York |
| 2 | Mildred Seebach | 36 | Daughter | Clerk | New York |
| 3 | Elizabeth Busch | 61 | Head | — | New York |
| 4 | Walter Busch | 36 | Son | Clerk | New York |
| 5 | Tillie Tronoff | 52 | Head | — | New York |
| 6 | Thelma Tronoff | 22 | Daughter | — | New York |
| 7 | August Hunger | 75 | Head | — | Germany |
| 8 | Robert Stoddard | 44 | Son-in-law | Salesman | Canada English |
| 9 | Edna Stoddard | 32 | Daughter | — | New York |
| 10 | Nathan Roth | 68 | Head | Salesman | Russia |
| 11 | Bessie Roth | 60 | Wife | — | New York |
| 12 | Estelle Roth | 25 | Daughter | Model | New York |
| 13 | Reinhardt Schuetz | 35 | Head | Painter | Germany |
| 14 | Lieselotte Schuetz | 26 | Wife | — | Germany |
| 15 | Frederick Schuetz | 3 | Son | — | New York |
| 16 | Rolf Schuetz | 1 | Son | — | New York |
| 17 | Elsa Wehrenberg | 45 | Lodger | Housekeeper | Germany |
| 18 | Anneliese Wehrenberg | 23 | Daughter in law | Dental Asst | Germany |
| 19 | Lisa Wehrenberg | 19 | Daughter in law | Cashier | Germany |
| 20 | George Albrecht | 51 | Head | Laborer | Germany |
| 21 | Theresa Albrecht | 45 | Wife | — | Germany |
| 22 | Emily Rugen | 28 | Lodger | Clerk | New York |
| 23 | Simon Waterholter | 33 | Head | Butcher | Germany |
| 24 | Anna Waterholter | 31 | Wife | — | Germany |
| 25 | Barbara Waterholter | 2 | Daughter | — | New York |
| 26 | George Hahn | 45 | Lodger | Cooper | Germany |
| 27 | William Rindros | 56 | Head | Carpenter | Finland |
| 28 | Sigrid Rindros | 50 | Wife | Housekeeper | Finland |
| 29 | Mildred Rindros | 26 | Son | Die Caster | Minnesota |
| 30 | Astrid Rindros | 22 | Daughter | Saleslady | Minnesota |
| 31 | Sigfred Rindros | 20 | Son | Handy Man | Minnesota |
| 32 | Vivian Rindros | 17 | Daughter | — | Minnesota |
| 33 | David Cowan | 54 | Head | Stationary Engr | New York |
| 34 | Harriet Cowan | 49 | Wife | — | New York |
| 35 | Mary Cowan THIS PERSON | 20 | Daughter | — | New York |
| 36 | Ruth Cowan | 15 | Daughter | — | New York |
| 37 | Mary Sanford | 77 | Mother in law | — | New York |
| 38 | James Mcadams | 52 | Head | Patrolman | New York |
| 39 | Irene Mcadams | 48 | Wife | — | New York |
| 40 | James Jr. Mcadams | 27 | Son | Chauffeur | 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)