JK
John Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Will, Illinois
Our Model Tree links this John Kovach across the 1920 and 1930 US Censuses in Will, Illinois (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 9-person household.
Age 58
b. ~1872
Male
Head
Born: Jugoslavia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Will, Illinois |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Jugoslavia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1894 |
| Age at First Marriage | 27 |
| Father's Birthplace | Jugoslavia |
| Mother's Birthplace | Jugoslavia |
| Additional Details | |
| Occupation | Laborer |
| Industry | Brick Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Slovenian |
| Home Owned/Rented | O |
| Home Value / Rent | 2600 |
| Radio Set | R |
| Birthplace (normalized) | jugoslavia |
| Occupation | Laborer |
| Township / Ward | Lockport Township |
| Est. Birth Year | ~1872 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Matilda Kovach | Daughter | — | 8 | ~1922 |
| Ignatius Kovach | Son | — | 10 | ~1920 |
| Mary Kovach | Daughter | — | 15 | ~1915 |
| Edwin Kovach | Son | — | 1 | ~1929 |
| John Kovach | Head | — | 58 | ~1872 |
| Tony Kovach | Son | — | 19 | ~1911 |
| Angeline Kovach | Daughter | — | 21 | ~1909 |
| Frank Kovach | Son | — | 12 | ~1918 |
| Agnes Kovach | Spouse | — | 48 | ~1882 |
Census Appearances
1920
Pierce, Washington
Other, age 47
Pierce, Washington · implied b. ~1873 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovace |
| Given Name | John |
| Relationship to Head | R |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Jugoslavia |
| Year of Immigration | 1895 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Jugoslavia |
| Mother's Birthplace | Jugoslavia |
| Occupation | Carpenter |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Slavene |
| Year of Naturalization | 1909 |
| Birthplace (normalized) | jugoslavia |
1930
Will, Illinois
Head, age 58
Will, Illinois · implied b. ~1872 — 9 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Jugoslavia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1894 |
| Age at First Marriage | 27 |
| Father's Birthplace | Jugoslavia |
| Mother's Birthplace | Jugoslavia |
| Occupation | Laborer |
| Industry | Brick Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Slovenian |
| Home Owned/Rented | O |
| Home Value / Rent | 2600 |
| Radio Set | R |
| Birthplace (normalized) | jugoslavia |
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 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Kovach
Head · 1930 · age 58 · b. ~1872 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Will, Illinois
Open full size
1930 US Federal Census — Will, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel569:0694)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred Gregoric | 9 | daughter | — | Illinois |
| 2 | Edward Kelly | 67 | Head | Press Feeder | Illinois |
| 3 | Elizabeth M Kelly | 67 | Wife | — | Illinois |
| 4 | Riley Kelly | 36 | Son | Laborer | Illinois |
| 5 | Theresa Kelly | 32 | Ad daughter | — | Illinois |
| 6 | Peter A Fuser | 60 | Head | Laborer | Illinois |
| 7 | Annie R Fuser | 54 | Wife | — | Illinois |
| 8 | Alfred J Fuser | 21 | Son | Fireman | Illinois |
| 9 | Alice J Fuser | 21 | Daughter | — | Illinois |
| 10 | Martin Horvat | 48 | Head | Carpenter | Jugoslavia |
| 11 | Annie Horvat | 45 | Wife | — | Jugoslavia |
| 12 | Frank Horvat | 19 | Son | Carpenter | Illinois |
| 13 | Joseph Horvat | 18 | Son | Glazier | Illinois |
| 14 | Rose Horvat | 16 | Daughter | — | Illinois |
| 15 | Josephine Horvat | 14 | Daughter | — | Illinois |
| 16 | Edward Horvat | 11 | Son | — | Illinois |
| 17 | Raymond Horvat | 7 | Son | — | Illinois |
| 18 | John Kovach THIS PERSON | 58 | Head | Laborer | Jugoslavia |
| 19 | Agnes Kovach | 48 | Wife | — | Jugoslavia |
| 20 | Angeline Kovach | 21 | Daughter | Maid | Illinois |
| 21 | Tony Kovach | 19 | Son | Truck Driver | Illinois |
| 22 | Mary Kovach | 15 | Daughter | — | Illinois |
| 23 | Frank Kovach | 12 | Son | — | Illinois |
| 24 | Ignatius Kovach | 10 | Son | — | Illinois |
| 25 | Matilda Kovach | 8 | Daughter | — | Illinois |
| 26 | Edwin Kovach | 1 | Son | — | Illinois |
| 27 | John Gushini | 35 | Head | Laborer | Italy |
| 28 | Mary Gushini | 32 | Wife | — | Italy |
| 29 | Onisiana Gushini | 19 | Daughter | Housework | Italy |
| 30 | Albert Gushini | 18 | Son | Laborer | Italy |
| 31 | Mike Gushini | 15 | Son | Laborer | Illinois |
| 32 | Yolanda Gushini | 11 | Daughter | — | Illinois |
| 33 | Mike Blase | 37 | Head | Laborer | Jugoslavia |
| 34 | Josephine Blase | 32 | Wife | — | Jugoslavia |
| 35 | Josephine M Blase | 11 | Daughter | — | Illinois |
| 36 | Barbara Blase | 8 | Daughter | — | Illinois |
| 37 | Katie Blase | 1 | Daughter | — | Illinois |
| 38 | Pauline Shieru | 58 | Head | — | Poland |
| 39 | Pauline J Shieru | 30 | Daughter | Pressfeeder | Illinois |
| 40 | Ted Shieru | 28 | Son | Section Man | Illinois |
| 41 | Bernard Shieru | 26 | Son | Laborer | Illinois |
| 42 | Anthony Shieru | 24 | Son | Laborer | Illinois |
| 43 | Leo Shieru | 21 | Son | Laborer | Illinois |
| 44 | Frank Shieru | 18 | Son | Handyman | Illinois |
| 45 | William Kruse | 38 | Head | Pipefitter | Germany |
| 46 | Mary Kruse | 33 | Wife | — | Illinois |
| 47 | Charlotte Kruse | 12 | Daughter | — | Illinois |
| 48 | Lorenz Kruse | 11 | Son | — | Illinois |
| 49 | Richard Kruse | 2 | Son | — | Illinois |
| 50 | Harry J Brosser | 38 | Head | Carpenter | Illinois |
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)