MK
Mary Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Luzerne, Pennsylvania
Our Model Tree links this Mary Kovach across the 1930 and 1940 US Censuses in Luzerne, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 12-person household.
Age 39
b. ~1891
Female
Spouse
Born: Austria
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Luzerne, Pennsylvania |
| Surname | Kovach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1916 |
| Age at First Marriage | 16 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
| Township / Ward | Swoyersville Borough |
| Est. Birth Year | ~1891 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| John Kovach | Head | — | 44 | ~1886 |
| Helen Kovach | Daughter | — | 12 | ~1918 |
| Pauline Kovach | Daughter | — | 8 | ~1922 |
| Jane Kovach | Daughter | — | 7 | ~1923 |
| Michael Kovach | Son | — | 11 | ~1919 |
| Mary Kovach | Spouse | — | 39 | ~1891 |
| Elizabeth Kovach | Daughter | — | 16 | ~1914 |
| Mary Kovach | Daughter | — | 18 | ~1912 |
| Agnes Kovach | Daughter | — | 14 | ~1916 |
| Rosalie Kovach | Daughter | — | 4 | ~1926 |
| Margaret Kovach | Daughter | — | 5 | ~1925 |
| Andrew Kovach | Son | — | 9 | ~1921 |
Census Appearances
1930
Luzerne, Pennsylvania
Spouse, age 39
Luzerne, Pennsylvania · implied b. ~1891 — 12 household members
| Surname | Kovach |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Austria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1916 |
| Age at First Marriage | 16 |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Austria |
| Birthplace (normalized) | austria |
1940
Luzerne-County, Pennsylvania
Head, age 53
Luzerne-County, Pennsylvania · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovacs |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Widowed |
| Birthplace | Austria |
| 1935 Residence (City) | Luzerne Borough |
| 1935 Residence (County) | Luzerne |
| Naturalization Status | Naturalized |
| Occupation | Attendant |
| Industry | Gasoline filling station |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 100 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 Mary Kovach across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kovach
Spouse · 1930 · age 39 · b. ~1891 · 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:fifteenthcensus00reel2071:0968)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph Dankowski | 26 | Head | Laborer | Pennsylvania |
| 52 | Sophia Dankowski | 25 | Wife | — | Pennsylvania |
| 53 | Joseph Dankowski | 2 | Son | — | Pennsylvania |
| 54 | Edward Dankowski | 1 | Son | — | Pennsylvania |
| 55 | Helen Dankowski | 0 | Daughter | — | Pennsylvania |
| 56 | John Dankowski | 4 | Son | — | Pennsylvania |
| 57 | Mary Dankowski | 3 | Daughter | — | Pennsylvania |
| 58 | Anna Dankowski | 1 | Daughter | — | Pennsylvania |
| 59 | Joseph Dankowski | 0 | Son | — | Pennsylvania |
| 60 | John Kowalski | 56 | Head | Miner | Poland |
| 61 | Rose Kowalski | 50 | Wife | — | Poland |
| 62 | Fred Kowalski | 24 | Son | — | Pennsylvania |
| 63 | Adam Kowalski | 16 | Son | — | Pennsylvania |
| 64 | Salvador Lewis | 24 | Head | Laborer | Pennsylvania |
| 65 | Agnes Lewis | 23 | Wife | — | Pennsylvania |
| 66 | Betty Lewis | 4 | Daughter | — | Pennsylvania |
| 67 | Andrew Lewis | 3 | Son | — | Pennsylvania |
| 68 | Anna Lewis | 53 | Mother | — | Pennsylvania |
| 69 | Andrew Lewis | 20 | Brother | Laborer | Pennsylvania |
| 70 | Frank Zager | 42 | Head | — | Poland |
| 71 | Mary Zager | 39 | Wife | — | Poland |
| 72 | Anna Zager | 17 | Daughter | Silk Worker | Pennsylvania |
| 73 | Stanley Zager | 16 | Son | Laborer | Pennsylvania |
| 74 | Frank Zager | 15 | Son | — | Pennsylvania |
| 75 | Sophia Zager | 13 | Daughter | — | Pennsylvania |
| 76 | John Zager | 11 | Son | — | Pennsylvania |
| 77 | Pauline Jerome | 49 | Head | — | Poland |
| 78 | Joseph Jerome | 24 | Son | Agent | Pennsylvania |
| 79 | Anna Jerome | 22 | Daughter | — | Pennsylvania |
| 80 | Raymond Jerome | 16 | Son | — | Pennsylvania |
| 81 | John Kovach | 44 | Head | Miner | Austria |
| 82 | Mary Kovach THIS PERSON | 39 | Wife | — | Austria |
| 83 | Mary Kovach | 18 | Daughter | Bookkeeper | New York |
| 84 | Elizabeth Kovach | 16 | Daughter | Silk Worker | New York |
| 85 | Agnes Kovach | 14 | Daughter | Silk Worker | New York |
| 86 | Helen Kovach | 12 | Daughter | — | Pennsylvania |
| 87 | Michael Kovach | 11 | Son | — | Pennsylvania |
| 88 | Andrew Kovach | 9 | Son | — | Pennsylvania |
| 89 | Pauline Kovach | 8 | Daughter | — | Pennsylvania |
| 90 | Jane Kovach | 7 | Daughter | — | Pennsylvania |
| 91 | Margaret Kovach | 5 | Daughter | — | Pennsylvania |
| 92 | Rosalie Kovach | 4 | Daughter | — | Pennsylvania |
| 93 | Michael Kovach | 38 | Head | — | Pennsylvania |
| 94 | Mary Kovach | 37 | Wife | — | Pennsylvania |
| 95 | Agnes Kovach | 9 | Daughter | — | Pennsylvania |
| 96 | George Kovach | 7 | Son | — | Pennsylvania |
| 97 | Stephen Kovach | 6 | Son | — | Pennsylvania |
| 98 | Katherine Kovach | 4 | Daughter | — | Pennsylvania |
| 99 | Olga Kovach | 2 | Daughter | — | Pennsylvania |
| 100 | Kovach | None | — | — | — |
Related Census Records
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)