JK
John Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · None, None
Our Model Tree links this John Kovach across the 1920 and 1930 US Censuses (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 12-person household.
Age 43
b. ~1887
Male
Head
Born: Austria
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | None, None |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 25 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
| Occupation | Laborer |
| 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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Kovach | Son | — | 5 | ~1925 |
| Elizabeth Kovach | Daughter | — | 7 | ~1923 |
| Mary Kovach | Daughter | — | 15 | ~1915 |
| John Kovach | Head | — | 43 | ~1887 |
| Richard Kovach | Son | — | 11 | ~1919 |
| Albert Kovach | Son | — | ~1930 | |
| Margaret Kovach | Daughter | — | 13 | ~1917 |
| Edward Kovach | Son | — | 3 | ~1927 |
| Helen Kovach | Daughter | — | 9 | ~1921 |
| Julia Kovach | Spouse | — | 40 | ~1890 |
| John Kovach | Son | — | 17 | ~1913 |
| Robert Kovach | Son | — | 1 | ~1929 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 32
Allegheny, Pennsylvania · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Austria |
| Year of Immigration | 1906 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Laborer |
| Industry | Locomotive Wks |
| 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
None, None
Head, age 43
None, None · implied b. ~1887 — 12 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 25 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Occupation | Laborer |
| Industry | Steel Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| 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 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 · None
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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 — None, None
Open full size
1930 US Federal Census — None, None
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2087:0989)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eleanor | 15 | daughter | — | Pennsylvania |
| 2 | Edward | 13 | son | — | Pennsylvania |
| 3 | Anna | 11 | daughter | — | Pennsylvania |
| 4 | Mary Bartholomew | 24 | Servant | Servant | Pennsylvania |
| 5 | Irvin B. Rippert | 43 | Head | Laborer | Pennsylvania |
| 6 | Emma Rippert | 38 | Wife | — | Pennsylvania |
| 7 | Charles H. Rippert | 18 | Son | Helper | Pennsylvania |
| 8 | Gladys M. Rippert | 10 | Daughter | — | Pennsylvania |
| 9 | Theodore A. Rippert | 7 | Son | — | Pennsylvania |
| 10 | Elizabeth J. Rippert | 5 | Daughter | — | Pennsylvania |
| 11 | William Powell | 51 | Head | Laborer | Pennsylvania |
| 12 | Elizabeth J. Powell | 48 | Wife | — | Pennsylvania |
| 13 | Margaret Powell | 18 | Daughter | Stenographer | Pennsylvania |
| 14 | Arthur Powell | 14 | Son | — | Pennsylvania |
| 15 | William Powell | 11 | Son | — | Pennsylvania |
| 16 | Theodore Powell | 8 | Son | — | Pennsylvania |
| 17 | Robert Powell | 5 | Son | — | Pennsylvania |
| 18 | Albert Powell | 3 | Son | — | Pennsylvania |
| 19 | John Kovach THIS PERSON | 43 | Head | Laborer | Austria |
| 20 | Julia Kovach | 40 | Wife | — | Austria |
| 21 | John Kovach | 17 | Son | — | Pennsylvania |
| 22 | Mary Kovach | 15 | Daughter | — | Pennsylvania |
| 23 | Margaret Kovach | 13 | Daughter | — | Pennsylvania |
| 24 | Richard Kovach | 11 | Son | — | Pennsylvania |
| 25 | Helen Kovach | 9 | Daughter | — | Pennsylvania |
| 26 | Elizabeth Kovach | 7 | Daughter | — | Pennsylvania |
| 27 | William Kovach | 5 | Son | — | Pennsylvania |
| 28 | Edward Kovach | 3 | Son | — | Pennsylvania |
| 29 | Robert Kovach | 1 | Son | — | Pennsylvania |
| 30 | Albert Kovach | 0 | Son | — | Pennsylvania |
| 31 | Joseph Kovach | 45 | Head | Laborer | Austria |
| 32 | Anna Kovach | 40 | Wife | — | Austria |
| 33 | Joseph Kovach | 18 | Son | — | Pennsylvania |
| 34 | Anna Kovach | 16 | Daughter | — | Pennsylvania |
| 35 | Mary Kovach | 14 | Daughter | — | Pennsylvania |
| 36 | Helen Kovach | 12 | Daughter | — | Pennsylvania |
| 37 | Margaret Kovach | 10 | Daughter | — | Pennsylvania |
| 38 | Elizabeth Kovach | 8 | Daughter | — | Pennsylvania |
| 39 | William Kovach | 6 | Son | — | Pennsylvania |
| 40 | Edward Kovach | 4 | Son | — | Pennsylvania |
| 41 | Robert Kovach | 2 | Son | — | Pennsylvania |
| 42 | Albert Kovach | 1 | Son | — | Pennsylvania |
| 43 | Joseph Kovach | 45 | Head | Laborer | Austria |
| 44 | Anna Kovach | 40 | Wife | — | Austria |
| 45 | Joseph Kovach | 18 | Son | — | Pennsylvania |
| 46 | Anna Kovach | 16 | Daughter | — | Pennsylvania |
| 47 | Mary Kovach | 14 | Daughter | — | Pennsylvania |
| 48 | Helen Kovach | 12 | Daughter | — | Pennsylvania |
| 49 | Margaret Kovach | 10 | Daughter | — | Pennsylvania |
| 50 | Elizabeth Kovach | 8 | 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)