MK
Mary Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wyandotte, Kansas
Our Model Tree links this Mary Kovach across the 1930 and 1940 US Censuses in Wyandotte, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 8-person household.
Age 10
b. ~1920
Female
Daughter
Born: Kansas
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Wyandotte, Kansas |
| Surname | Kovach |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Yugoslavia |
| Mother's Birthplace | Yugoslavia |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Kansas City Ch |
| Est. Birth Year | ~1920 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Carl Kovach | Son | — | 11 | ~1919 |
| Joseph Kovach | Son | — | 1 | ~1929 |
| Albert Kovach | Son | — | 3 | ~1927 |
| Max Kovach | Son | — | 5 | ~1925 |
| Barbara Kovach | Daughter | — | 8 | ~1922 |
| Julia Kovach | Spouse | — | 40 | ~1890 |
| Mary Kovach | Daughter | — | 10 | ~1920 |
| Blas Kovach | Head | — | 40 | ~1890 |
Census Appearances
1930
Wyandotte, Kansas
Daughter, age 10
Wyandotte, Kansas · implied b. ~1920 — 8 household members
| Surname | Kovach |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Yugoslavia |
| Mother's Birthplace | Yugoslavia |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Wyandotte-County, Kansas
Daughter, age 20
Wyandotte-County, Kansas · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovac |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Kansas City, City |
| 1935 Residence (County) | Wyandotte |
| Occupation | Seamstress |
| Industry | Dress Mfg. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 · 1930 · age 10 · b. ~1920 · Kansas
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Sibling
Albert Kovach
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Max Kovach
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Kovach
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Kovach
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kovach
Sibling · 1930 · 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
1930 US Federal Census — Wyandotte, Kansas
Open full size
1930 US Federal Census — Wyandotte, Kansas
Page Contents
50 people indexed on this census page (ia:1930:15thcensus726usce:1104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Pajek | 11 | Son | None | Kansas |
| 2 | Mary Pajek | 9 | Daughter | None | Kansas |
| 3 | George Gojak | 56 | Head | Laborer | Yugoslavia |
| 4 | Mary Gojak | 55 | Wife | None | Yugoslavia |
| 5 | John Bogner | 30 | Head | Butcher | Yugoslavia |
| 6 | Mary Bogner | 22 | Wife | Wrapper | Yugoslavia |
| 7 | Anton Vesel | 56 | Head | Ice Dept | Yugoslavia |
| 8 | Anton Jr Vesel | 9 | Son | None | Kansas |
| 9 | Anthony Gugonich | 44 | Head | Laborer | Yugoslavia |
| 10 | Frances Gugonich | 36 | Wife | None | Yugoslavia |
| 11 | Anthony Gugonich | 18 | Son | Candy Maker | Kansas |
| 12 | John Gugonich | 15 | Son | Delivery Boy | Kansas |
| 13 | Magdalene Gugonich | 13 | Daughter | None | Kansas |
| 14 | Elizabeth Gugonich | 10 | Daughter | None | Kansas |
| 15 | William Gugonich | 5 | Son | None | Kansas |
| 16 | Anna Selak | 43 | Head | None | Yugoslavia |
| 17 | John Stimac | 41 | Brother | Cooper | Yugoslavia |
| 18 | Mary Selak | 40 | Sister | Sausage Maker | Yugoslavia |
| 19 | Mary Selak | 15 | Daughter | Glove Maker | Yugoslavia |
| 20 | Blas Kovach | 40 | Head | Packer | Yugoslavia |
| 21 | Julia Kovach | 40 | Wife | None | Yugoslavia |
| 22 | Carl Kovach | 11 | Son | None | Kansas |
| 23 | Mary Kovach THIS PERSON | 10 | Daughter | None | Kansas |
| 24 | Barbara Kovach | 8 | Daughter | None | Kansas |
| 25 | Max Kovach | 5 | Son | None | Kansas |
| 26 | Albert Kovach | 3 | Son | None | Kansas |
| 27 | Joseph Kovach | 1 | Son | None | Kansas |
| 28 | Rudolph Velf | 41 | Head | Butcher | Yugoslavia |
| 29 | Mary Velf | 45 | Wife | None | Yugoslavia |
| 30 | Joe Velf | 18 | Son | Butcher | Kansas |
| 31 | Rudolph Jr Velf | 16 | Son | None | Kansas |
| 32 | Anton Velf | 14 | Son | None | Kansas |
| 33 | John Velf | 12 | Son | None | Kansas |
| 34 | Anna Velf | 10 | Daughter | None | Kansas |
| 35 | Diana Velf | 7 | Daughter | None | Kansas |
| 36 | Bruno Car | 28 | Head | Casing Dept | Yugoslavia |
| 37 | Barbara Car | 21 | Wife | None | Kansas |
| 38 | Albert Car | 3 | Son | None | Kansas |
| 39 | Anton Andrisevich | 32 | Head | Laborer | Yugoslavia |
| 40 | Stephanie Andrisevich | 34 | Wife | None | Yugoslavia |
| 41 | Anna Andrisevich | 13 | Daughter | None | Kansas |
| 42 | Anton Jr Andrisevich | 11 | Son | None | Kansas |
| 43 | Rose Andrisevich | 9 | Daughter | None | Kansas |
| 44 | Louis Andrisevich | 5 | Son | None | Kansas |
| 45 | Stephanie Andrisevich | 2 | Daughter | None | Kansas |
| 46 | Sophia Andrisevich | 0 | Daughter | None | Kansas |
| 47 | George Bancic | 56 | Boarder | Laborer | Yugoslavia |
| 48 | Steve Tomescegovich | 45 | Head | Casing Dept | Yugoslavia |
| 49 | Veronica Tomescegovich | 30 | Wife | None | Yugoslavia |
| 50 | Frank Tomescegovich | 9 | Son | None | Kansas |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)