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Mary Bullock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Blackford-County, Indiana
Our Model Tree links this Mary Bullock across the 1930 and 1940 US Censuses in Blackford-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Blackford-County, Indiana |
| Surname | Bullock |
| Given Name | Mary Lea |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Jackson Township |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| J Bullock | Son | — | 21 | ~1919 |
| Robert Bullock | Head | — | 43 | ~1897 |
| Kathryn Bullock | Daughter | — | 19 | ~1921 |
| Helen Bullock | Daughter | — | 7 | ~1933 |
| Francis Scott | Other | — | 25 | ~1915 |
| Myra Bullock | Spouse | — | 41 | ~1899 |
| Lucille Bullock | Daughter | — | 13 | ~1927 |
| Harriet Scott | Daughter | — | 20 | ~1920 |
| Mary Bullock | Daughter | — | 17 | ~1923 |
| James Bullock | Son | — | 6 | ~1934 |
Census Appearances
1930
Delaware, Indiana
Daughter, age 7
Delaware, Indiana · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bullock |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Blackford-County, Indiana
Daughter, age 17
Blackford-County, Indiana · implied b. ~1923 — 10 household members
| Surname | Bullock |
| Given Name | Mary Lea |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Delaware |
| Highest Grade | H-2 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 17 · b. ~1923 · Indiana
★ You are viewing this record
Sibling
Helen Bullock
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
J Bullock
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Bullock
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriet Scott
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Bullock
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathryn Bullock
Sibling · 1940 · age 19
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 — Blackford-County, Indiana
Open full size
1940 US Federal Census — Blackford-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01027-00422)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emery S. Hulley | 66 | Head | Farmer | Indiana |
| 2 | Sarah O. Hulley | 66 | Wife | — | Ohio |
| 3 | Russell R. Holdcroft | 44 | Head | Farmer | Indiana |
| 4 | Blanche Holdcroft | 44 | Wife | — | Indiana |
| 5 | Richard Holdcroft | 18 | Son | — | Indiana |
| 6 | Mildred Jean Holdcroft | 16 | Daughter | — | Indiana |
| 7 | Jeanetta Holdcroft | 11 | Daughter | — | Indiana |
| 8 | Ida Ridgeway | 73 | Head | Farm Manager | Indiana |
| 9 | Isabel Faris | 76 | Sister | — | Indiana |
| 10 | Claude Porman | 47 | Head | Hired Operator | Indiana |
| 11 | Elsie Porman | 44 | Wife | — | Indiana |
| 12 | Glen Porman | 17 | Son | — | Ohio |
| 13 | Joe Porman | 15 | Son | — | Ohio |
| 14 | Mary Porman | 12 | Daughter | — | Ohio |
| 15 | Helen Porman | 10 | Daughter | — | Ohio |
| 16 | Ethel Porman | 8 | Daughter | — | Ohio |
| 17 | Minnie Linn | 74 | Mother-in-law | — | Indiana |
| 18 | Alice Dale | 75 | Head | — | Indiana |
| 19 | Orville Wilson | 68 | Head | Farmer Cemetery Caretaker | Indiana |
| 20 | Forrest K. Wilson | 65 | Wife | — | Indiana |
| 21 | Ruth Wilson | 27 | Daughter | Glass-Ware Decorator | Indiana |
| 22 | John H. Gibson | 27 | Head | Night Watchman | Indiana |
| 23 | Vesta Gibson | 30 | Wife | — | Indiana |
| 24 | John R. Gibson | 1 | Son | — | Indiana |
| 25 | Robert Bullock | 43 | Head | Farmer Carpenter | Indiana |
| 26 | Myra L. Bullock | 41 | Wife | — | Indiana |
| 27 | J. Robert Bullock | 21 | Son | Machine-Boy | Indiana |
| 28 | Kathryn Bullock | 19 | Daughter | Stenographer | Indiana |
| 29 | Mary Lea Bullock THIS PERSON | 17 | Daughter | — | Indiana |
| 30 | Lucille Bullock | 13 | Daughter | — | Indiana |
| 31 | Helen Jane Bullock | 7 | Daughter | — | Indiana |
| 32 | James Bullock | 6 | Son | — | Indiana |
| 33 | Francis E. Scott | 25 | Son-in-law | Assistant Yardman | Indiana |
| 34 | Harriet L. Scott | 20 | Daughter | Clerk | Indiana |
| 35 | Jacob Miller | 64 | Head | — | Indiana |
| 36 | Elsey Miller | 34 | Wife | Clerk | Indiana |
| 37 | Sara Frances Ireland | 19 | Housekeeper | — | Kentucky |
| 38 | Paul Ireland | 2 | Housekeeper's son | — | Indiana |
| 39 | Miles Havens | 59 | Head | Farmer | Ohio |
| 40 | Elva Havens | 55 | Wife | — | Indiana |
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)