JK
John Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Luzerne, Pennsylvania
Our Model Tree links this John Kovach across the 1920 and 1930 US Censuses in Luzerne, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 9-person household.
Age 43
b. ~1887
Male
Head
Born: Slovakia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Luzerne, Pennsylvania |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Slovakia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 22 |
| Father's Birthplace | Slovakia |
| Mother's Birthplace | Slovakia |
| Additional Details | |
| Occupation | Laborer |
| Industry | Coal mines |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Slovak |
| Home Owned/Rented | R |
| Home Value / Rent | $10 |
| Birthplace (normalized) | slovakia |
| Occupation | Laborer |
| Township / Ward | Plains |
| Est. Birth Year | ~1887 |
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 |
|---|---|---|---|---|
| Mary Kovach | Daughter | — | 15 | ~1915 |
| John Kovach | Son | — | 16 | ~1914 |
| Julia Kovach | Daughter | — | 11 | ~1919 |
| Helen Kovach | Daughter | — | 8 | ~1922 |
| John Kovach | Head | — | 43 | ~1887 |
| Anna Kovach | Daughter | — | 20 | ~1910 |
| Helen Kovach | Daughter | — | 13 | ~1917 |
| Anna Kovach | Spouse | — | 34 | ~1896 |
| Margaret Kovach | Daughter | — | 2 | ~1928 |
Census Appearances
1920
Richmond, New …
Head, age 33
Richmond, New York · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Slovakia |
| Year of Immigration | 1905 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Slovakia |
| Mother's Birthplace | Slovakia |
| Occupation | Laborer |
| Industry | Linoleum Wks |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Slovak |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Year of Naturalization | 1918 |
| Birthplace (normalized) | slovakia |
1930
Luzerne, Pennsylvania
Head, age 43
Luzerne, Pennsylvania · implied b. ~1887 — 9 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Slovakia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1905 |
| Age at First Marriage | 22 |
| Father's Birthplace | Slovakia |
| Mother's Birthplace | Slovakia |
| Occupation | Laborer |
| Industry | Coal mines |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Slovak |
| Home Owned/Rented | R |
| Home Value / Rent | $10 |
| Birthplace (normalized) | slovakia |
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 43 · b. ~1887 · Pennsylvania
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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 — Luzerne, Pennsylvania
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1930 US Federal Census — Luzerne, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2071:0660)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Frank | 28 | Son | — | Pennsylvania |
| 52 | Enoch Morgan | 52 | Head | Laborer | Wales |
| 53 | Alice Morgan | 45 | Wife | — | Pennsylvania |
| 54 | Charles Morgan | 20 | Son | Brakeman | Pennsylvania |
| 55 | Margaret J. Morgan | 5 | Daughter | — | Pennsylvania |
| 56 | John Poliak | 37 | Head | Laborer | Poland |
| 57 | Josephine Poliak | 42 | Wife | — | Poland |
| 58 | Victor Poliak | 18 | Son | Laborer | Pennsylvania |
| 59 | Stanley Poliak | 16 | Son | Ice Picker | Pennsylvania |
| 60 | Leo Poliak | 14 | Son | — | Pennsylvania |
| 61 | Frank Poliak | 10 | Son | — | Pennsylvania |
| 62 | Alex Kovach | 55 | Head | Laborer | Hungary |
| 63 | Annie Kovach | 41 | Wife | — | Hungary |
| 64 | Adel Kovach | 5 | Daughter | — | Pennsylvania |
| 65 | Maryanna Kovach | 3 | Daughter | — | Pennsylvania |
| 66 | John Kovach THIS PERSON | 43 | Head | Laborer | Slovakia |
| 67 | Anna Kovach | 34 | Wife | — | Slovakia |
| 68 | Anna Kovach | 20 | Daughter | Examiner | Pennsylvania |
| 69 | John Kovach | 16 | Son | Laborer | Pennsylvania |
| 70 | Mary Kovach | 15 | Daughter | — | Pennsylvania |
| 71 | Helen Kovach | 13 | Daughter | — | Pennsylvania |
| 72 | Julia Kovach | 11 | Daughter | — | Pennsylvania |
| 73 | Helen Kovach | 8 | Daughter | — | Pennsylvania |
| 74 | Margaret Kovach | 2 | Daughter | — | Pennsylvania |
| 75 | John Kovach | 37 | Head | Fireman | Slovakia |
| 76 | Mary Kovach | 34 | Wife | — | Slovakia |
| 77 | John Kovach | 15 | Son | — | Pennsylvania |
| 78 | Teresa Kovach | 13 | Daughter | — | Pennsylvania |
| 79 | Anna Kovach | 10 | Daughter | — | Pennsylvania |
| 80 | Helen Kovach | 8 | Daughter | — | Pennsylvania |
| 81 | Andrew Kovach | 7 | Son | — | Pennsylvania |
| 82 | Joseph Kovach | 5 | Son | — | Pennsylvania |
| 83 | John Perak | 43 | Head | Laborer | Hungary |
| 84 | Theresa Perak | 35 | Wife | — | Pennsylvania |
| 85 | George Perak | 15 | Son | — | Pennsylvania |
| 86 | Alice Perak | 14 | Daughter | — | Pennsylvania |
| 87 | John Perak | 12 | Son | — | Pennsylvania |
| 88 | Helen Perak | 11 | Daughter | — | Pennsylvania |
| 89 | Walter Perak | 8 | Son | — | Pennsylvania |
| 90 | Mary Perak | 7 | Daughter | — | Pennsylvania |
| 91 | Anna Perak | 5 | Daughter | — | Pennsylvania |
| 92 | Joseph Perak | 3 | Son | — | Pennsylvania |
| 93 | Francis Perak | 1 | Son | — | Pennsylvania |
| 94 | Mary Srelicki | 38 | Head | — | Poland |
| 95 | Viola Srelicki | 18 | Daughter | Finisher | Pennsylvania |
| 96 | Lottie Srelicki | 16 | Daughter | Feeder | Pennsylvania |
| 97 | Jennie Srelicki | 15 | Daughter | Examiner | Pennsylvania |
| 98 | Stella Srelicki | 14 | Daughter | — | Pennsylvania |
| 99 | Anna Srelicki | 14 | Daughter | — | Pennsylvania |
| 100 | Josephine Srelicki | 10 | Daughter | — | Pennsylvania |
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)