MC
Mary Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Mary Cooper across the 1920, 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed), with identified parents Madison & Eva — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Occupation | Fill Operator |
| Industry | Telephone Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1050 |
| Highest Grade | H 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Fill Operator |
| Township / Ward | Columbus |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Helen Cooper | Daughter | — | 14 | ~1926 |
| Mary Cooper | Daughter | — | 23 | ~1917 |
| Madison Cooper | Head | — | 56 | ~1884 |
| Eva Cooper | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Franklin, Ohio
Daughter, age 2
Franklin, Ohio · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Franklin, Ohio
Daughter, age 12
Franklin, Ohio · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Daughter, age 23
Franklin-County, Ohio · implied b. ~1917 — 4 household members
| Surname | Cooper |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Franklin |
| Occupation | Fill Operator |
| Industry | Telephone Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1050 |
| Highest Grade | H 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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. Identified parents: father Madison Cooper (~0.92 confidence) and mother Eva Cooper (~0.92 confidence) and mother Eva Cooper (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Madison Cooper
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Eva Cooper
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Eva Cooper
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Cooper
Daughter · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
Helen Cooper
Sibling · 1940 · age 14
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 — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03250-00620)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Esther Roberts | 42 | Wife | Postmaster | New York |
| 2 | Marjorie Roberts | 19 | Daughter | Fill Operator | Pennsylvania |
| 3 | Karma Roberts | 16 | Daughter | — | Pennsylvania |
| 4 | Gladys Roberts | 15 | Daughter | — | Pennsylvania |
| 5 | Thomas Roberts | 13 | Son | — | Ohio |
| 6 | Madison F. Cooper | 56 | Head | Agent | Ohio |
| 7 | Eva F. O. Cooper | 53 | Wife | — | Ohio |
| 8 | Mary Cooper THIS PERSON | 23 | Daughter | Fill Operator | Ohio |
| 9 | Helen Cooper | 14 | Daughter | — | Ohio |
| 10 | Estella Struble | 60 | Head | — | New York |
| 11 | Robert Young | 31 | Head | Physician | Ohio |
| 12 | Ruth Young | 30 | Wife | — | Ohio |
| 13 | Barbara Young | 3 | Daughter | — | Ohio |
| 14 | Robert Young | 1 | Son | — | Ohio |
| 15 | Mildred Rich | 20 | Maid | Maid | Ohio |
| 16 | Jane Riley | 34 | Head | Dist. Representative | Massachusetts |
| 17 | Rachel Riley | 33 | Wife | — | Massachusetts |
| 18 | Gertrude Ann Riley | 10 | Daughter | — | Connecticut |
| 19 | Barbara Jane Riley | 5 | Daughter | — | Connecticut |
| 20 | Frank G. Stuppell | 50 | Head | Salesman | Wisconsin |
| 21 | Alice Stuppell | 54 | Wife | — | Michigan |
| 22 | Ella B. Horner | 81 | Mother-in-law | — | Michigan |
| 23 | Joseph E. Shannon | 45 | Head | Lawyer | Ohio |
| 24 | Jeannette Shannon | 40 | Wife | Proprietor | Ohio |
| 25 | Walter S. Seabrook | 50 | Head | — | Ohio |
| 26 | Audrey Seabrook | 48 | Wife | — | Ohio |
| 27 | John Seabrook | 24 | Son | — | Ohio |
| 28 | — | None | — | — | — |
| 29 | Myrtle Dennis | 37 | Head | Splicing Foreman | Ohio |
| 30 | Henrietta Dennis | 55 | Mother | — | Ohio |
| 31 | Eleanore Dennis | 15 | Daughter | — | Ohio |
| 32 | John Richard Dennis | 12 | Nephew | — | Ohio |
| 33 | Alva M. Hall | 60 | Head | Assistant Secretary | Ohio |
| 34 | Florence H. Hall | 56 | Sister | — | Ohio |
| 35 | Arthur T. Arnold | 66 | Head | Real Estate Secretary | Illinois |
| 36 | Maude Arnold | 60 | Wife | — | Illinois |
| 37 | Gladys Walkup | 38 | Lodger | Teacher | Pennsylvania |
| 38 | Paul M. Herbert | 50 | Head | Lawyer | Ohio |
| 39 | Ruby Herbert | 37 | Wife | — | Ohio |
| 40 | Patricia Herbert | 15 | Daughter | — | Ohio |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)