MG
Mary Gregory — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lorain-County, Ohio
Our Model Tree links this Mary Gregory across the 1930 and 1940 US Censuses in Lorain-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 13-person household.
Age 12
b. ~1928
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lorain-County, Ohio |
| Surname | Gregory |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lorain City |
| 1935 Residence (County) | Lorain |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Lorain City |
| Est. Birth Year | ~1928 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Dean Gregory | Daughter | — | 8 | ~1932 |
| Amanda Gregory | Daughter | — | ~1940 | |
| Mary Gregory | Daughter | — | 12 | ~1928 |
| Rose Gregory | Daughter | — | 2 | ~1938 |
| Alice Gregory | Daughter | — | 9 | ~1931 |
| Dorothy Gregory | Daughter | — | 4 | ~1936 |
| Marshall Gregory | Head | — | 43 | ~1897 |
| Elmer Gregory | Son | — | 5 | ~1935 |
| Junior Gregory | Son | — | 16 | ~1924 |
| Curtiss Gregory | Son | — | 3 | ~1937 |
| Le Gregory | Son | — | 7 | ~1933 |
| Charlie Gregory | Son | — | 10 | ~1930 |
| Miney Gregory | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Lorain, Ohio
Daughter, age 5
Lorain, Ohio · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gregory |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lorain-County, Ohio
Daughter, age 12
Lorain-County, Ohio · implied b. ~1928 — 13 household members
| Surname | Gregory |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lorain City |
| 1935 Residence (County) | Lorain |
| Highest Grade | No 5 |
| 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 Gregory across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Gregory
Daughter · 1940 · age 12 · b. ~1928 · Ohio
★ You are viewing this record
Sibling
Amanda Gregory
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Junior Gregory
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dean Gregory
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Gregory
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Le Gregory
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elmer Gregory
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Curtiss Gregory
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Gregory
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Gregory
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlie Gregory
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 — Lorain-County, Ohio
Open full size
1940 US Federal Census — Lorain-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03102-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sophie Cid | 24 | Wife | — | Ohio |
| 2 | Michael Cid | 3 | Son | — | Ohio |
| 3 | Edward Cid | 1 | Son | — | Ohio |
| 4 | Peter Delgado | 26 | Head | Laborer | Texas |
| 5 | Mary Delgado | 20 | Wife | — | Mexico |
| 6 | Cecelia Delgado | 1 | Daughter | — | Ohio |
| 7 | Jesus Arroyo | 40 | Head | Pipe Heater | Mexico |
| 8 | Carmen Arroyo | 37 | Wife | — | Mexico |
| 9 | Jesus Jr Arroyo | 18 | Son | — | Texas |
| 10 | Theresa Arroyo | 16 | Daughter | — | Michigan |
| 11 | Carlos Arroyo | 14 | Son | — | Ohio |
| 12 | Amelia Arroyo | 12 | Daughter | — | Ohio |
| 13 | Phillip Arroyo | 10 | Son | — | Ohio |
| 14 | Edward Arroyo | 5 | Son | — | Ohio |
| 15 | Joe Arroyo | 3 | Son | — | Ohio |
| 16 | Maria Arroyo | 1 | Daughter | — | Ohio |
| 17 | Marshall Gregory | 43 | Head | Laborer | Mississippi |
| 18 | Miney Gregory | 41 | Wife | — | Mississippi |
| 19 | Junior Gregory | 16 | Son | — | Ohio |
| 20 | Mary Gregory THIS PERSON | 12 | Daughter | — | Ohio |
| 21 | Charlie Gregory | 10 | Son | — | Ohio |
| 22 | Alice Gregory | 9 | Daughter | — | Ohio |
| 23 | Dean Mary Gregory | 8 | Daughter | — | Ohio |
| 24 | Le Roy Gregory | 7 | Son | — | Ohio |
| 25 | Elmer Gregory | 5 | Son | — | Ohio |
| 26 | Dorothy Gregory | 4 | Daughter | — | Ohio |
| 27 | Curtiss Gregory | 3 | Son | — | Ohio |
| 28 | Rose Marie Gregory | 2 | Daughter | — | Ohio |
| 29 | Amanda Gregory | 0 | Daughter | — | Ohio |
| 30 | Rose Jones | 40 | Head | — | New York |
| 31 | Minnie Jones | 23 | Daughter | Maid | Kentucky |
| 32 | Eugene Jones | 21 | Son | New Worker | West Virginia |
| 33 | Vivian Jones | 19 | Daughter | — | Ohio |
| 34 | Clarence Jones | 15 | Son | — | Ohio |
| 35 | Alberta Jones | 13 | Daughter | — | Ohio |
| 36 | Evelyn Jones | 12 | Daughter | — | Ohio |
| 37 | Lorraine Jones | 10 | Daughter | — | Ohio |
| 38 | Ray Jones | 7 | Son | — | Ohio |
| 39 | Ray Perez | 42 | Head | Laborer | Mexico |
| 40 | Dolores Perez | 42 | Wife | — | Mexico |
Related Census Records
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)