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John Kowalski — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Saginaw, Michigan
Our Model Tree links this John Kowalski across the 1920 and 1930 US Censuses in Saginaw, Michigan (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 9-person household.
Age 37
b. ~1893
Male
Head
Born: Michigan
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Saginaw, Michigan |
| Surname | Kowalski |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Occupation | Blacksmith |
| Industry | Electric Power Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3700 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Blacksmith |
| Township / Ward | Village Of Carrollton |
| Est. Birth Year | ~1893 |
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 |
|---|---|---|---|---|
| Lucille Kowalski | Daughter | — | 13 | ~1917 |
| Lorraine Kowalski | Daughter | — | 11 | ~1919 |
| Victoria Kowalski | Spouse | — | 36 | ~1894 |
| Romain Kowalski | Daughter | — | 1 | ~1929 |
| Virginia Kowalski | Daughter | — | 14 | ~1916 |
| Rita Kowalski | Daughter | — | 8 | ~1922 |
| John Kowalski | Head | — | 37 | ~1893 |
| Romuald Kowalski | Son | — | 1 | ~1929 |
| Gerald Kowalski | Son | — | 5 | ~1925 |
Census Appearances
1920
Saginaw, Michigan
Head, age 27
Saginaw, Michigan · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Blacksmith |
| Industry | Shipyard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Saginaw, Michigan
Head, age 37
Saginaw, Michigan · implied b. ~1893 — 9 household members
| Surname | Kowalski |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 22 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Blacksmith |
| Industry | Electric Power Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3700 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Kowalski across 2 US Census years (1920 and 1930) in Saginaw, Michigan, using XGBoost record linkage.
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This person
Anchor record
John Kowalski
Head · 1930 · age 37 · b. ~1893 · Michigan
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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 — Saginaw, Michigan
Open full size
1930 US Federal Census — Saginaw, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1021:0585)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Grai | 69 | Head | Lumber Piler | Poland |
| 2 | Balbina Grai | 61 | Wife | — | Poland |
| 3 | Leonard Grai | 22 | Son | Core Maker | Michigan |
| 4 | Valerian Schultz | 27 | Head | Pipe Fitting | Poland |
| 5 | Marion Schultz | 24 | Wife | — | Lithuania |
| 6 | Geraldine Schultz | 5 | Daughter | — | Michigan |
| 7 | Valerie Schultz | 1 | Daughter | — | Michigan |
| 8 | Andrew Cuchoniak | 70 | Head | None (Retired) | Poland |
| 9 | Julia Cuchoniak | 63 | Wife | — | Poland |
| 10 | Benjamin Hujkowski | 50 | Head | Machinist | Michigan |
| 11 | Mary Hujkowski | 44 | Wife | — | Poland |
| 12 | Roman Hujkowski | 14 | Son | — | Michigan |
| 13 | Joseph Teoper | 34 | Head | Laborer Jobs | Poland |
| 14 | Agatha Teoper | 28 | Wife | — | Michigan |
| 15 | Florentine Teoper | 11 | Daughter | — | Michigan |
| 16 | Irene Teoper | 9 | Daughter | — | Michigan |
| 17 | Gwendolyn Teoper | 7 | Daughter | — | Michigan |
| 18 | Marek Bocianski | 72 | Head | — | Poland |
| 19 | Hattie Bocianski | 33 | Son | Pipe Fitter | Michigan |
| 20 | Martin Bocianski | 29 | Son | Machinist | Michigan |
| 21 | Annette Bocianski | 76 | Sister | — | Poland |
| 22 | Anthony Samecki | 42 | Head | Welder | Michigan |
| 23 | Anna Samecki | 40 | Wife | — | Michigan |
| 24 | Anthony Samecki | 12 | Son | — | Michigan |
| 25 | Raymond Samecki | 10 | Son | — | Michigan |
| 26 | Clarence Samecki | 9 | Son | — | Michigan |
| 27 | Arthur Samecki | 4 | Son | — | Michigan |
| 28 | Joseph Kowalski | 41 | Head | Boiler Maker | Michigan |
| 29 | Victoria Kowalski | 37 | Wife | — | Michigan |
| 30 | Eleanor Kowalski | 15 | Daughter | Shipping Clerk | Michigan |
| 31 | Joseph Jr. Kowalski | 12 | Son | — | Michigan |
| 32 | Edward Kowalski | 6 | Son | — | Michigan |
| 33 | John Kowalski THIS PERSON | 37 | Head | Blacksmith | Michigan |
| 34 | Victoria Kowalski | 36 | Wife | — | Michigan |
| 35 | Virginia Kowalski | 14 | Daughter | — | Michigan |
| 36 | Lucille Kowalski | 13 | Daughter | — | Michigan |
| 37 | Lorraine Kowalski | 11 | Daughter | — | Michigan |
| 38 | Rita Kowalski | 8 | Daughter | — | Michigan |
| 39 | Gerald Kowalski | 5 | Son | — | Michigan |
| 40 | Romuald Kowalski | 1 | Son | — | Michigan |
| 41 | Romain Kowalski | 1 | Daughter | — | Michigan |
| 42 | Bernice Kowalski | 65 | Head | — | Poland |
| 43 | Leonard Kowalski | 26 | Son | Salesman | Michigan |
| 44 | Chester Kowalski | 23 | Son | Truck Driver | Michigan |
| 45 | Arthur Bastic | 45 | Head | Painter | Michigan |
| 46 | Martha Bastic | 46 | Wife | — | Germany |
| 47 | John Schultz | 81 | Father in law | None (Retired) | Germany |
| 48 | John Jr. Schultz | 40 | Head | Flanger | Michigan |
| 49 | Viola Schultz | 37 | Wife | — | Michigan |
| 50 | Frank Schultz | 16 | Son | Cutting Head | Michigan |
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)