JK
John Kovach — 1930 US Census Record
Model Tree available1930 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), with identified parents John & John — first a son (b.~1899), then head of a 5-person household.
Age 31
b. ~1899
Male
Son
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cuyahoga, Ohio |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Additional Details | |
| Occupation | Dish washer |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Dish Washer |
| Township / Ward | Cleveland City |
| Est. Birth Year | ~1899 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Kovach | Other | — | 50 | ~1880 |
| Julius Kovach | Son | — | 12 | ~1918 |
| John Kovach | Son | — | 31 | ~1899 |
| John Kovach | Head | — | 56 | ~1874 |
| Stella Kovach | Daughter | — | 23 | ~1907 |
Census Appearances
1910
Cuyahoga, Ohio
Son, age 10
Cuyahoga, Ohio · implied b. ~1900 — 36 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Cuyahoga, Ohio
Son, age 21
Cuyahoga, Ohio · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovacko |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Occupation | Labourer |
| Industry | Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Magyar |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 31
Cuyahoga, Ohio · implied b. ~1899 — 5 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Occupation | Dish washer |
| Industry | Hotel |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 John Kovach across 3 US Census years (1910, 1920 and 1930) in Cuyahoga, Ohio, using XGBoost record linkage. Identified parents: father John Kovach (~0.92 confidence) and father John Kovacko (~0.92 confidence) and mother Mary Kovacko (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kovach
b. ~1874
Source father
● Household
· direct · ~0.92
Father
John Kovacko
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Kovacko
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Kovach
Son · 1930 · age 31 · b. ~1899 · Ohio
★ You are viewing this record
Sibling
Stella Kovach
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julius Kovach
Sibling · 1930 · age 12
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 — Cuyahoga, Ohio
Open full size
1930 US Federal Census — Cuyahoga, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1779:0078)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Elizabeth Paul | 14 | Daughter | — | Ohio |
| 52 | John Paul | 12 | Son | — | Ohio |
| 53 | Helen Paul | 5 | Daughter | — | Ohio |
| 54 | Charles Takacs | 42 | Head | Machinist | Hungary |
| 55 | Gisella Takacs | 38 | Wife-H | Presser | Hungary |
| 56 | Charles Takacs | 19 | Son | Machinist | Ohio |
| 57 | Helen Takacs | 18 | Daughter | Power Mach Oper | Ohio |
| 58 | Julius Takacs | 15 | Son | — | Ohio |
| 59 | Walter Drake | 30 | Head | Conductor | New York |
| 60 | Helen Drake | 27 | Wife-H | — | Ohio |
| 61 | Rose M. Drake | 2 | Daughter | — | Ohio |
| 62 | Robert Drake | 21 | Nephew | Compositor | New York |
| 63 | Joseph Szabo | 32 | Head | Moulder | Czechoslovakia |
| 64 | Elizabeth Szabo | 32 | Wife-H | — | Czechoslovakia |
| 65 | Ernest Szabo | 6 | Son | — | Connecticut |
| 66 | Elizabeth Szabo | 4 | Daughter | — | Ohio |
| 67 | Thomas Smith | 55 | Head | Florist Helper | Czechoslovakia |
| 68 | Mary Smith | 60 | Wife-H | Housework | Czechoslovakia |
| 69 | Fred Rada | 22 | Step-son | Truck Driver | Ohio |
| 70 | Charles Snyder | 29 | Head | Carpenter | Ohio |
| 71 | Virginia Snyder | 30 | Wife-H | — | Ohio |
| 72 | Charles Snyder | 1 | Son | — | Ohio |
| 73 | Emery Vargo | 29 | Head | Sheet Metal Worker | Hungary |
| 74 | Barbara Vargo | 24 | Wife-H | Housework | Hungary |
| 75 | James Vargo | 1 | Son | — | Indiana |
| 76 | John Kovach | 56 | Head | Laborer | Hungary |
| 77 | Mary Kovach | 50 | Wife-H | — | Hungary |
| 78 | Julius Kovach | 12 | Son | — | Ohio |
| 79 | John Kovach THIS PERSON | 31 | Son | Dish Washer | Ohio |
| 80 | Stella Kovach | 23 | Daughter | Waitress | Ohio |
| 81 | Steve Jugas | 53 | Head | Auto Body Maker | Hungary |
| 82 | Anne Jugas | 44 | Wife-H | — | Hungary |
| 83 | Ella Jugas | 23 | Daughter | Typist | Hungary |
| 84 | Emma Jugas | 16 | Daughter | — | Ohio |
| 85 | Steve Jugas | 13 | Son | — | Ohio |
| 86 | Florence Jugas | 8 | Daughter | — | Ohio |
| 87 | Eugene Negro | 38 | Head | Inspector | Italy |
| 88 | Rose Negro | 25 | Wife-H | — | Italy |
| 89 | Steve Sarkody | 42 | Head | Metal Polisher | Hungary |
| 90 | Susie Sarkody | 44 | Wife-H | — | Hungary |
| 91 | Isabel Sarkody | 16 | Daughter | — | New Jersey |
| 92 | Helen Sarkody | 15 | Daughter | — | New Jersey |
| 93 | Magdalene Budinger | 77 | Head | — | Germany |
| 94 | George Michael | 50 | Head | Painter | Ohio |
| 95 | Mary Michael | 42 | Wife-H | — | Czechoslovakia |
| 96 | Lawrence Michael | 25 | Son | Solderer | Ohio |
| 97 | William Michael | 20 | Son | Shipping Clerk | Ohio |
| 98 | Arthur Michael | 18 | Son | — | Ohio |
| 99 | Frederick A. Noyl | 70 | Head | Caretaker | Germany |
| 100 | Caroline Noyl | 57 | Wife-H | — | Ohio |
Pedigree Summary
John + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)