MG
Mary Grace — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Mary Grace across the 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 6-person household.
Age 17
b. ~1923
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Grace |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Columbus |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Grace | Son | — | 20 | ~1920 |
| Martha Britton | Other | — | 41 | ~1899 |
| Sarah Grace | Head | — | 42 | ~1898 |
| Mary Grace | Daughter | — | 17 | ~1923 |
| Frances Grace | Daughter | — | 18 | ~1922 |
| Camille Grace | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Franklin, Ohio
Daughter, age 7
Franklin, Ohio · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grace |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Daughter, age 17
Franklin-County, Ohio · implied b. ~1923 — 6 household members
| Surname | Grace |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Income (1939) | 0 |
| Highest Grade | Hs 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 Grace across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grace
Daughter · 1940 · age 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
Frances Grace
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Camille Grace
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Grace
Sibling · 1940 · age 20
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 — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03245-00212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Cotyk | 33 | Wife | — | New Jersey |
| 42 | Josephine Cotyk | 14 | Daughter | — | Canton |
| 43 | Marjorie Cotyk | 12 | Daughter | — | Canton |
| 44 | Lillian Cotyk | 10 | Daughter | — | Canton |
| 45 | John Cotyk | 9 | Son | — | Canton |
| 46 | Mary J. Cotyk | 7 | Daughter | — | Canton |
| 47 | George Cotyk | 5 | Son | — | Canton |
| 48 | Catherine Cotyk | 2 | Daughter | — | Ohio |
| 49 | Philip Siler | 35 | Head | Supervisor | Ohio |
| 50 | Grace Siler | 30 | Wife | — | Ohio |
| 51 | Doris Siler | 10 | Daughter | — | Ohio |
| 52 | Philip Jr. Siler | 1 | Son | — | Ohio |
| 53 | Lucy Marsh | 15 | Cousin | — | Ohio |
| 55 | Lloyd E. Keller | 53 | Head | Helper | Ohio |
| 56 | Ella J. Keller | 52 | Wife | — | Ohio |
| 57 | Helen Andrews | 26 | Lodger | Nurse | Ohio |
| 58 | John W. Shanchard | 26 | Head | Cashier | Ohio |
| 59 | Ruth Shanchard | 24 | Wife | — | Ohio |
| 60 | Sarah B. Grace | 42 | Head | — | Ohio |
| 61 | Camille Grace | 21 | Daughter | Meat Wrapper | Ohio |
| 62 | John J. Grace | 20 | Son | Shipping Clerk | Ohio |
| 63 | Frances A. Grace | 18 | Daughter | Meat Wrapper | Ohio |
| 64 | Mary Grace THIS PERSON | 17 | Daughter | — | Ohio |
| 65 | Martha A. Britton | 41 | Sister | — | Ohio |
| 66 | Charlie B. Terrell | 65 | Head | Engineer | Ohio |
| 67 | Minnie Terrell | 65 | Wife | Assistant | Ohio |
| 68 | Robert Terrell | 35 | Son | Carpenter | Ohio |
| 69 | Robert Badgely | 35 | Head | Fireman | Ohio |
| 70 | Grace Badgely | 40 | Wife | — | Germany |
| 71 | Robert Badgely | 13 | Son | — | Ohio |
| 72 | Jack Badgely | 10 | Son | — | Ohio |
| 73 | Donald Badgely | 7 | Son | — | Ohio |
| 74 | James Badgely | 3 | Son | — | Ohio |
| 75 | George Gleason | 23 | Head | Clerk | Ohio |
| 76 | Frances Gleason | 23 | Wife | — | Ohio |
| 77 | Diane Gleason | 0 | Daughter | — | Ohio |
| 78 | Oda Vance | 44 | Head | Grinder | Ohio |
| 79 | Lois Vance | 45 | Wife | — | Ohio |
| 80 | Roberta M. Vance | 10 | Daughter | Stenographer | 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)