MK
Mary Kovach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Mary Kovach across the 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Kovach |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Columbus |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kovach | Spouse | — | 47 | ~1893 |
| Paul Mccabe | Head | — | 25 | ~1915 |
| Joseph Kovach | Son | — | 17 | ~1923 |
| Michael Kovach | Son | — | 14 | ~1926 |
| John Kovach | Son | — | 16 | ~1924 |
| Mary Kovach | Daughter | — | 11 | ~1929 |
| Delbert Mccabe | Son | — | 1 | ~1939 |
| Mary Mccabe | Spouse | — | 21 | ~1919 |
Census Appearances
1930
Franklin, Ohio
Daughter, age 2
Franklin, Ohio · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Yugoslavia |
| Mother's Birthplace | Yugoslavia |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Daughter, age 11
Franklin-County, Ohio · implied b. ~1929 — 8 household members
| Surname | Kovach |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Highest Grade | 5 |
| 1935 Residence | Ohio |
| 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 Kovach across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kovach
Daughter · 1940 · age 11 · b. ~1929 · Ohio
★ You are viewing this record
Sibling
Michael Kovach
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kovach
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kovach
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delbert Mccabe
Sibling · 1940 · age 1
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
40 people indexed on this census page (nara:1940:m-t0627-03240-00419)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elza A Cooper | 63 | Head | Trucker | Ohio |
| 2 | Martha E Cooper | 58 | Wife | — | Iowa |
| 3 | Jerome Richardson | 59 | Head | Day Cleaning | Ohio |
| 4 | Cora Richardson | 58 | Wife | House Keeper | Ohio |
| 5 | Loyd Seeley | 24 | Lodger | Instrameter | Ohio |
| 6 | George P Mason | 41 | Head | Yard Clerk | Ohio |
| 7 | Julia Mason | 36 | Wife | — | Italy |
| 8 | Jeanette Mason | 15 | daughter | — | Ohio |
| 9 | Eugene Crocco | 16 | son | — | Ohio |
| 10 | Paul A Mccabe | 25 | Head | Butcher | Ohio |
| 11 | Mary L Mccabe | 21 | Wife | — | Ohio |
| 12 | Delbert A Mccabe | 1 | son | — | Ohio |
| 13 | Mary Kovach | 47 | Wife | — | Hungary |
| 14 | Joseph Kovach | 17 | son | Messenger | Ohio |
| 15 | John Kovach | 16 | son | — | Ohio |
| 16 | Michael Kovach | 14 | son | — | Ohio |
| 17 | Mary Kovach THIS PERSON | 11 | daughter | — | Ohio |
| 18 | Vintie Hopkins | 47 | Head | Furnace Tender | Ohio |
| 19 | Ella Hopkins | 32 | Wife | Binder | Kentucky |
| 20 | Thelma Buggs | 11 | daughter | — | Kentucky |
| 21 | Steve Boross | 49 | Head | Molder | Hungary |
| 22 | Anna Boross | 46 | Wife | — | Hungary |
| 23 | Steve Boross | 18 | son | — | Ohio |
| 24 | Anna Boross | 16 | daughter | — | Ohio |
| 25 | Murguette Boross | 14 | daughter | — | Ohio |
| 26 | Alex Boross | 12 | son | — | Ohio |
| 27 | Andy Boross | 10 | son | — | Ohio |
| 28 | John Gestner | 23 | daughter | — | Ohio |
| 29 | Joseph Gestner | 23 | son in law | Molder | New York |
| 30 | Joseph Gestner | 4 | Grandson | — | Ohio |
| 31 | Jack D Gestner | 3 | Grandson | — | Ohio |
| 32 | Joseph A Vara | 17 | Lodger | Bell Hop | Ohio |
| 33 | John C Orban | 27 | Lodger | Glass Carrier | Ohio |
| 34 | Steve Hallai | 62 | Lodger | Laborer | Hungary |
| 35 | Helen L Orban | 21 | Lodger | Sorter | Ohio |
| 36 | Norma F Taylione | 20 | Lodger | Bellman | Ohio |
| 37 | Yuchlos Jacobs | 20 | Lodger | Grinder | Ohio |
| 38 | Louis M Jacobs | 19 | Lodger | Molder | Ohio |
| 39 | Edward W Santavicca | 20 | Lodger | Bellman | Ohio |
| 40 | Frank W Russell | 56 | Head | Melter | 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)