JK
John Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this John Kovach across the 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 1
b. ~1929
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Carnegie Borough |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| John Kovach | Son | — | 1 | ~1929 |
| George Kovach | Son | — | 4 | ~1926 |
| John Kovach | Son | — | 13 | ~1917 |
| Anna Kovach | Spouse | — | 35 | ~1895 |
| Martha Kovach | Spouse | — | 27 | ~1903 |
| Anna Kovach | Daughter | — | 11 | ~1919 |
| George Kovach | Son | — | 32 | ~1898 |
| John Kovach | Head | — | 41 | ~1889 |
| Martha Kovach | Daughter | — | 3 | ~1927 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1929 — 9 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 12
Allegheny-County, Pennsylvania · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovacs |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | West Homestead Borough |
| 1935 Residence (County) | Allegheny |
| Industry | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kovach
Son · 1930 · age 1 · b. ~1929 · Pennsylvania
★ You are viewing this record
Sibling
George Kovach
Sibling · 1930 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Kovach
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kovach
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Kovach
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Kovach
Sibling · 1930 · age 11
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 — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1961rs:0297)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Loughran | 39 | Head | Laborer | Pennsylvania |
| 2 | Mary Loughran | 36 | Wife | — | Pennsylvania |
| 3 | John Loughran | 16 | Son | — | Pennsylvania |
| 4 | Mary Loughran | 14 | Daughter | — | Pennsylvania |
| 5 | Alice Loughran | 12 | Daughter | — | Pennsylvania |
| 6 | Margaret Loughran | 8 | Daughter | — | Pennsylvania |
| 7 | Joseph Snyder | 45 | Head | Carpenter | Pennsylvania |
| 8 | Ruth Snyder | 45 | Wife | — | Pennsylvania |
| 9 | Joseph Snyder | 21 | Son | Driver | Ohio |
| 10 | Elizabeth Snyder | 20 | Daughter | — | Pennsylvania |
| 11 | Margaret Snyder | 18 | Daughter | — | Pennsylvania |
| 12 | Ruth Snyder | 16 | Daughter | — | Pennsylvania |
| 13 | John Snyder | 15 | Son | — | Pennsylvania |
| 14 | Dorothy Snyder | 13 | Daughter | — | Pennsylvania |
| 15 | Robert Snyder | 11 | Son | — | Pennsylvania |
| 16 | John Higgins | 53 | Head | Engineer | Pennsylvania |
| 17 | Mary Higgins | 51 | Wife | — | Indiana |
| 18 | John Higgins | 17 | Son | Laborer | Pennsylvania |
| 19 | Mary Higgins | 13 | Daughter | — | Pennsylvania |
| 20 | John Kovach | 41 | Head | Engineer | Pennsylvania |
| 21 | Anna Kovach | 35 | Wife | — | Czechoslovakia |
| 22 | John Kovach | 13 | Son | — | Pennsylvania |
| 23 | Anna Kovach | 11 | Daughter | — | Pennsylvania |
| 24 | George Kovach | 32 | Son | Auto Service | Pennsylvania |
| 25 | Martha Kovach | 27 | Wife | — | Pennsylvania |
| 26 | George Kovach | 4 | Son | — | Pennsylvania |
| 27 | Martha Kovach | 3 | Daughter | — | Pennsylvania |
| 28 | John Kovach THIS PERSON | 1 | Son | — | Pennsylvania |
| 29 | George Kovach | 58 | Head | — | Pennsylvania |
| 30 | Martha Kovach | 51 | Wife | — | Pennsylvania |
| 31 | George Kovach | 26 | Son | Dentist | Pennsylvania |
| 32 | Martha Kovach | 22 | Daughter | — | Pennsylvania |
| 33 | John Kovach | 21 | Son | — | Pennsylvania |
| 34 | Robert Kovach | 14 | Son | — | Pennsylvania |
| 35 | William Kovach | 44 | Head | Telegrapher | Pennsylvania |
| 36 | Anna Kovach | 40 | Wife | — | Pennsylvania |
| 37 | William Kovach | 18 | Son | — | Pennsylvania |
| 38 | Anna Kovach | 15 | Daughter | — | Pennsylvania |
| 39 | George Kovach | 12 | Son | — | Pennsylvania |
| 40 | Martha Kovach | 9 | Daughter | — | Pennsylvania |
| 41 | John Kovach | 4 | Son | — | Pennsylvania |
| 42 | Robert Kovach | 2 | Son | — | Pennsylvania |
| 43 | George Kovach | 38 | Head | Electrician | Pennsylvania |
| 44 | Martha Kovach | 42 | Wife | — | Pennsylvania |
| 45 | George Kovach | 2 | Son | — | Pennsylvania |
| 46 | Martha Kovach | 28 | Daughter | — | Maine |
| 47 | John Kovach | 46 | Head | Telegrapher | Pennsylvania |
| 48 | Anna Kovach | 47 | Wife | — | Pennsylvania |
| 49 | John Kovach | 20 | Son | — | Pennsylvania |
| 50 | Anna 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)