MB
Mary Bullock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Mary Bullock across the 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Bullock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield Twp. |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Springfield Twp |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bernice Bullock | Daughter | — | 5 | ~1935 |
| Clara Bullock | Spouse | — | 37 | ~1903 |
| Hattie Bullock | Son | — | 6 | ~1934 |
| Mary Bullock | Daughter | — | 10 | ~1930 |
| Thelma Bullock | Daughter | — | 3 | ~1937 |
| Lester Bullock | Daughter | — | 12 | ~1928 |
| Ellis Bullock | Head | — | 37 | ~1903 |
| Ellis Bullock | Son | — | 10 | ~1930 |
| Bertha Bullock | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Hamilton, Ohio
Daughter, age
Hamilton, Ohio · implied b. ~1930 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Daughter, age 10
Hamilton-County, Ohio · implied b. ~1930 — 9 household members
| Surname | Bullock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield Twp. |
| 1935 Residence (County) | Hamilton |
| Highest Grade | No 4 |
| 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 Bullock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bullock
Daughter · 1940 · age 10 · b. ~1930 · Ohio
★ You are viewing this record
Sibling
Hattie Bullock
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Bullock
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Bullock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Bullock
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Bullock
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellis Bullock
Sibling · 1940 · age 10
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 — 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-t0627-03080-00070)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Williams | 56 | Head | New Worker | Ohio |
| 2 | Andrew Stronger | 58 | Head | Labourer | Alabama |
| 3 | Cora Stronger | 53 | Wife | — | Alabama |
| 4 | Lucile Stronger | 16 | Daughter | — | Ohio |
| 5 | Nora Lee Stronger | 10 | Daughter | — | Ohio |
| 6 | Eliza Johnson | 65 | Head | — | Kentucky |
| 7 | Richard Butler | 43 | Nephew | Tapperer | Kentucky |
| 8 | Augustus Mcmullen | 43 | Head | Labor | Georgia |
| 9 | Sally Mcmullen | 37 | Wife | — | Georgia |
| 10 | Willie Mcmullen | 20 | Son | Pin Boy | Georgia |
| 11 | Elizabeth Mcmullen | 18 | Daughter | Maid | Georgia |
| 12 | Anna C. Mcmullen | 12 | Daughter | — | Georgia |
| 13 | Charlie Mcmullen | 6 | Son | — | Georgia |
| 14 | Duane Mcmullen | 5 | Daughter | — | Georgia |
| 15 | Betty Jean Mcmullen | 1 | Daughter | — | Ohio |
| 16 | Fred Crutchfield | 35 | Head | Janitor | Georgia |
| 17 | Anna Mae Crutchfield | 33 | Wife | — | Georgia |
| 18 | Fred Anne Crutchfield | 1 | Daughter | — | Ohio |
| 19 | Mary Crutchfield | 68 | Mother | — | Georgia |
| 20 | Mary Louise Crutchfield | 11 | Niece | — | Ohio |
| 21 | Jasper Booker | 21 | Head | — | Kentucky |
| 22 | Lawrence Perry | 30 | Law | Labor | Ohio |
| 23 | Dothen Anne Perry | 21 | Daughter-in-law | — | Ohio |
| 24 | Carl Perry | 5 | Grandson | — | Ohio |
| 25 | James Ecton | 64 | Head | — | Kentucky |
| 26 | Ida Ecton | 66 | Wife | — | Kentucky |
| 27 | Lindsay Fields | 42 | Head | Porter | Georgia |
| 28 | A. Mae Fields | 36 | Wife | — | Georgia |
| 29 | Marie Fields | 18 | Daughter | Maid | Georgia |
| 30 | Beulah Fields | 17 | Daughter | Maid | Georgia |
| 31 | Kellie Fields | 1 | Son | — | Ohio |
| 32 | Ellis Bullock | 37 | Head | Labor | Georgia |
| 33 | Clara Bullock | 37 | Wife | — | Georgia |
| 34 | Lester Bullock | 12 | Daughter | — | Ohio |
| 35 | Mary Bullock THIS PERSON | 10 | Daughter | — | Ohio |
| 36 | Ellis W. Bullock | 10 | Son | — | Ohio |
| 37 | Bertha Bullock | 8 | Daughter | — | Ohio |
| 38 | Hattie Bullock | 6 | Son | — | Ohio |
| 39 | Bernice Mae Bullock | 5 | Daughter | — | Ohio |
| 40 | Thelma Bullock | 3 | Daughter | — | 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)