MP
Mary Porter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Mary Porter across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents Katherine & Katherine — first a daughter (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Porter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati City |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Day worker |
| Industry | Printing Firm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 784 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Day Worker |
| Township / Ward | Cincinnati City |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Porter | Daughter | — | 32 | ~1908 |
| Michael Porter | Head | — | 64 | ~1876 |
| Mary Cavanaugh | Other | — | 70 | ~1870 |
Census Appearances
1920
Hamilton, Ohio
Daughter, age 11
Hamilton, Ohio · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Hamilton, Ohio
Daughter, age 21
Hamilton, Ohio · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | stenographer |
| Industry | roofing plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Daughter, age 32
Hamilton-County, Ohio · implied b. ~1908 — 3 household members
| Surname | Porter |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati City |
| 1935 Residence (County) | Hamilton |
| Occupation | Day worker |
| Industry | Printing Firm |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 784 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| 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 Porter across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Katherine Porter (~0.92 confidence) and mother Katherine Porter (~0.92 confidence) and father Frank Porter (~0.92 confidence) and father Michael Porter (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Katherine Porter
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Katherine Porter
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Frank Porter
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Michael Porter
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Porter
Daughter · 1940 · age 32 · b. ~1908 · Ohio
★ 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 — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03189-00264)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Bontz | 21 | Daughter | Bookkeeper | Ohio |
| 2 | Jessie Bontz | 20 | Daughter | Stenographer | Ohio |
| 3 | Rita Bontz | 18 | Daughter | — | Ohio |
| 4 | Thomas Bontz | 15 | Son | — | Ohio |
| 5 | Patrick Bontz | 11 | Son | — | Ohio |
| 6 | William Sherman | 38 | Head | Road Worker | Ohio |
| 7 | Armilda Sherman | 34 | Wife | — | Kentucky |
| 8 | William Sherman | 12 | Son | — | Ohio |
| 9 | Elizabeth Sherman | 10 | Daughter | — | Ohio |
| 10 | Charles Sherman | 9 | Son | — | Ohio |
| 11 | Amy Sherman | 3 | Daughter | — | Ohio |
| 12 | Katherine Sherman | 57 | Mother | Laundress | Kentucky |
| 13 | Floyd S. Pond | 41 | Head | Welder | Ohio |
| 14 | Claire Pond | 54 | Wife | — | Virginia |
| 15 | Millicent Pond | 17 | Daughter | — | Ohio |
| 16 | Left To Outside Pond | None | — | — | — |
| 17 | Patrick Tommy | 42 | Head | Scrapper | Irish Free State |
| 18 | Katherine Tommy | 31 | Wife | — | Irish Free State |
| 19 | Thomas Tommy | 3 | Son | — | Ohio |
| 20 | Josephine Yungbluth | 68 | Head | — | Ohio |
| 21 | Dorothy Yungbluth | 31 | Daughter | Clerk | Ohio |
| 22 | Louise Yungbluth | 65 | Sister | — | Ohio |
| 23 | George R. Miller | 25 | Head | Machine Operator | Ohio |
| 24 | Margaret Miller | 23 | Wife | — | Ohio |
| 25 | Blank By Mistake Miller | None | — | — | — |
| 26 | Michael Porter | 64 | Head | Cook & Steward | Irish Free State |
| 27 | Mary Porter THIS PERSON | 32 | Daughter | Day Worker | Ohio |
| 28 | Mary Cavanaugh | 70 | Sister | — | Irish Free State |
| 29 | Clarence Nuhani | 32 | Head | Plumber | Ohio |
| 30 | Dorothy Nuhani | 31 | Wife | — | Ohio |
| 31 | Joseph Sterner | 50 | Head | Machinist | Ohio |
| 32 | Edna R. Sterner | 36 | Wife | — | Ohio |
| 33 | John Sterner | 16 | Son | — | Ohio |
| 34 | Rosemary Sterner | 14 | Daughter | — | Ohio |
| 35 | Joseph Jr. Sterner | 7 | Son | — | Ohio |
| 36 | William Lowery | 45 | Head | Clerk | Ohio |
| 37 | Alma Lowery | 43 | Wife | — | Ohio |
| 38 | Rita Lowery | 14 | Daughter | — | Kentucky |
| 39 | Paul Lowery | 12 | Son | — | Kentucky |
| 40 | William Lowery | 10 | Son | — | Kentucky |
Pedigree Summary
Mary
Gen 1 · 4 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)