JK
John Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cuyahoga, Ohio
Our Model Tree links this John Kovach across the 1910, 1920 and 1930 US Censuses in Cuyahoga, Ohio (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 6-person household.
Age 45
b. ~1885
Male
Head
Born: Austria
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cuyahoga, Ohio |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 22 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Additional Details | |
| Occupation | Laborer |
| Industry | Auto plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | un |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
| Occupation | Laborer |
| Township / Ward | Cleveland City |
| Est. Birth Year | ~1885 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Kovach | Son | — | 13 | ~1917 |
| Mary Kovach | Daughter | — | 18 | ~1912 |
| Teresa Kovach | Daughter | — | 20 | ~1910 |
| John Kovach | Head | — | 45 | ~1885 |
| Hilda Kovach | Daughter | — | 12 | ~1918 |
| Helen Kovach | Other | — | 44 | ~1886 |
Census Appearances
1910
Cuyahoga, Ohio
Other, age 25
Cuyahoga, Ohio · implied b. ~1885 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Austria |
| Year of Immigration | 1904 |
| Naturalization Status | Alien |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Laborer |
| Industry | Nut & Bolt Wks |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
1920
Lorain, Ohio
Head, age 35
Lorain, Ohio · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Austria |
| Year of Immigration | 1907 |
| Naturalization Status | Alien |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Slovenian |
| Home Owned/Rented | R |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
1930
Cuyahoga, Ohio
Head, age 45
Cuyahoga, Ohio · implied b. ~1885 — 6 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 22 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Laborer |
| Industry | Auto plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | un |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
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 John Kovach across 3 US Census years (1910, 1920 and 1930) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Kovach
Head · 1930 · age 45 · b. ~1885 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cuyahoga, Ohio
Open full size
1930 US Federal Census — Cuyahoga, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1776:0464)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Koprowicz | 14 | son | — | Ohio |
| 2 | Helen Koprowicz | 7 | daughter | — | Ohio |
| 3 | Steve Maskos | 29 | head | Crane Oper | Ohio |
| 4 | Helen Maskos | 27 | wife-H | — | Ohio |
| 5 | Irene Maskos | 6 | daughter | — | Ohio |
| 6 | Bernice Maskos | 5 | daughter | — | Ohio |
| 7 | Michael Zalany | 22 | lodger | Drying Room | Pennsylvania |
| 8 | John Kovach THIS PERSON | 45 | head | Laborer | Austria |
| 9 | Helen Kovach | 44 | wife-H | — | Austria |
| 10 | Teresa Kovach | 20 | daughter | Seamer | Ohio |
| 11 | Mary Kovach | 18 | daughter | — | Ohio |
| 12 | John Jr. Kovach | 13 | son | — | Ohio |
| 13 | Hilda Kovach | 12 | daughter | — | Ohio |
| 14 | John Koman | 42 | head | Boiler Maker | Jugo Slavia |
| 15 | Mary Koman | 40 | wife-H | — | Jugo Slavia |
| 16 | Christine Koman | 19 | daughter | Finisher | Ohio |
| 17 | Jenny Koman | 10 | daughter | — | Ohio |
| 18 | Dorothy Koman | 5 | daughter | — | Ohio |
| 19 | Mary Mott | 18 | daughter | — | Ohio |
| 20 | William Mott | 26 | son-law | Battery | Ohio |
| 21 | William Jr. Mott | 1 | grandson | — | Ohio |
| 22 | Magdalena Webber | 61 | head | — | Germany |
| 23 | Fred Webber | 36 | son | Driver | Ohio |
| 24 | Peter Webber | 34 | son | Driver | Ohio |
| 25 | Albert Webber | 22 | son | Driver | Ohio |
| 26 | Teresa Webber | 20 | daughter | Saleslady | Ohio |
| 27 | Marie Webber | 19 | daughter | Stenographer | Ohio |
| 28 | John Jalon | 43 | head | Punch Press | Jugo Slavia |
| 29 | Mary Jalon | 37 | wife-H | — | Ohio |
| 30 | Mary C. Jalon | 15 | daughter | — | Ohio |
| 31 | Adolf Jalon | 14 | son | — | Ohio |
| 32 | Teresa Verbic | 45 | head | — | Jugo Slavia |
| 33 | Anthony Verbic | 21 | son | Painter | Ohio |
| 34 | Teresa B. Verbic | 18 | daughter | Mach. Oper. | Ohio |
| 35 | Mary Verbic | 16 | daughter | Servant | Ohio |
| 36 | Angela Verbic | 13 | daughter | — | Ohio |
| 37 | Peter Verbic | 11 | son | — | Ohio |
| 38 | John Verbic | 9 | son | — | Ohio |
| 39 | Mary Conovan | 70 | head | — | Irish Free State |
| 40 | Isabella Conovan | 56 | sister-H | — | Irish Free State |
| 41 | Eleanor Connors | 26 | lodger | Operator | Ohio |
| 42 | Joseph Troventer | 27 | head | Lineman | Austria |
| 43 | Lydia Troventer | 26 | wife-H | — | Pennsylvania |
| 44 | Robert Troventer | 7 | son | — | Ohio |
| 45 | Daniel Troventer | 3 | son | — | Ohio |
| 46 | John Mismas | 55 | head | Oiler | Jugo Slavia |
| 47 | Anna Mismas | 50 | wife-H | — | Jugo Slavia |
| 48 | Vera Mismas | 29 | daughter | Seamer | Ohio |
| 49 | Alice Mismas | 27 | daughter | Typist | Ohio |
| 50 | Alex Mismas | 22 | son | Barber | Ohio |
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)