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Mary Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scioto-County, Ohio
Our Model Tree links this Mary Brennan across the 1930 and 1940 US Censuses in Scioto-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1902), then head of a 11-person household.
Age 38
b. ~1902
Female
Spouse
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scioto-County, Ohio |
| Surname | Brennan |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Union Township |
| 1935 Residence (County) | Scioto |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Union Township |
| Est. Birth Year | ~1902 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Brennan | Daughter | — | 10 | ~1930 |
| James Brennan | Daughter | — | 10 | ~1930 |
| Viola Brennan | Daughter | — | 5 | ~1935 |
| Evelyn Brennan | Daughter | — | 3 | ~1937 |
| John Brennan | Head | — | 42 | ~1898 |
| Charles Brennan | Son | — | 15 | ~1925 |
| Denver Brennan | Son | — | 1 | ~1939 |
| Jack Brennan | Son | — | 19 | ~1921 |
| Lawrence Brennan | Son | — | 17 | ~1923 |
| Alva Brennan | Son | — | 23 | ~1917 |
| Mary Brennan | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Scioto, Ohio
Spouse, age 30
Scioto, Ohio · implied b. ~1900 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brannan |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 18 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Scioto-County, Ohio
Spouse, age 38
Scioto-County, Ohio · implied b. ~1902 — 11 household members
| Surname | Brennan |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Union Township |
| 1935 Residence (County) | Scioto |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Brennan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brennan
Spouse · 1940 · age 38 · b. ~1902 · Ohio
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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 — Scioto-County, Ohio
Open full size
1940 US Federal Census — Scioto-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03142-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wilma D Harvey | 15 | daughter | — | Ohio |
| 42 | John D Brennan | 42 | Head | Laborer | Ohio |
| 43 | Mary Brennan THIS PERSON | 38 | wife | — | Kentucky |
| 44 | Alva J Brennan | 23 | son | Laborer | Ohio |
| 45 | Jack Brennan | 19 | son | Laborer | West Virginia |
| 46 | Lawrence Brennan | 17 | son | New Worker | Ohio |
| 47 | Charles Brennan | 15 | son | New Worker | Ohio |
| 48 | James Brennan | 10 | daughter | — | Ohio |
| 49 | Catherine Brennan | 10 | daughter | — | Ohio |
| 50 | Viola Brennan | 5 | daughter | — | Ohio |
| 51 | Evelyn Brennan | 3 | daughter | — | Ohio |
| 52 | Denver Brennan | 1 | son | — | Ohio |
| 53 | Harry Payne | 52 | Head | Hoister | Ohio |
| 54 | Catherine Payne | 43 | wife | — | Kentucky |
| 55 | Merrill Payne | 26 | son | Private | Ohio |
| 56 | Charles Payne | 20 | son | Navigation | Ohio |
| 57 | John Payne | 18 | son | New Worker | Ohio |
| 58 | Marion Payne | 16 | son | New Worker | Ohio |
| 59 | Albert Brennan | 70 | Head | — | Ohio |
| 60 | Ida Brennan | 70 | wife | — | Ohio |
| 61 | Lawrence Brennan | 39 | Head | Wood Heel | Ohio |
| 62 | Virginia Brennan | 33 | wife | — | Ohio |
| 63 | Ruth Ann Brennan | 9 | daughter | — | Ohio |
| 64 | Caroline Brennan | 5 | daughter | — | Ohio |
| 65 | Peter D Estman | 45 | Head | Engineer | Ohio |
| 66 | Beatrice Estman | 27 | wife | Teacher | Ohio |
| 67 | Leonard Slendon | 47 | Head | Engineer | Virginia |
| 68 | Mae Slendon | 43 | wife | — | Ohio |
| 69 | Roger Slendon | 14 | son | — | Ohio |
| 70 | Helen Slendon | 6 | daughter | — | Ohio |
| 71 | Leo Payne | 24 | Head | Laborer | Ohio |
| 72 | Francis Payne | 19 | wife | — | Ohio |
| 73 | Phyllis Payne | 3 | daughter | — | Ohio |
| 74 | George D Shaffer | 46 | Head | — | Kentucky |
| 75 | Gaylord Shaffer | 15 | son | — | Ohio |
| 76 | Gathie Shaffer | 14 | son | — | Ohio |
| 77 | Harold Shaffer | 12 | son | — | Ohio |
| 78 | Jesse Shaffer | 11 | son | — | Ohio |
| 79 | Harry D Brendel | 30 | Head | Tray Reader | Ohio |
| 80 | Gertrude Brendel | 32 | wife | Forelady | Ohio |
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)