JK
John Kowalski — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wayne, Michigan
Our Model Tree links this John Kowalski across the 1920 and 1930 US Censuses in Wayne, Michigan (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 9-person household.
Age 19
b. ~1911
Male
Son
Born: Michigan
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Wayne, Michigan |
| Surname | Kowalski |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Spring factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Laborer |
| Township / Ward | Hamtramck City Part |
| Est. Birth Year | ~1911 |
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 |
|---|---|---|---|---|
| Stanley Kowalski | Son | — | 16 | ~1914 |
| Virginia Kowalski | Daughter | — | 8 | ~1922 |
| Anna Kowalski | Daughter | — | 11 | ~1919 |
| Helen Kowalski | Daughter | — | 12 | ~1918 |
| Lottie Koshwaniceh | Spouse | — | 20 | ~1910 |
| John Kowalski | Son | — | 19 | ~1911 |
| Stanley Kowalski | Head | — | 46 | ~1884 |
| Joseph Koshwaniceh | Other | — | 22 | ~1908 |
| Irene Kowalski | Daughter | — | 14 | ~1916 |
Census Appearances
1920
Wayne, Michigan
Son, age 9
Wayne, Michigan · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Poland |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Son, age 19
Wayne, Michigan · implied b. ~1911 — 9 household members
| Surname | Kowalski |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Spring factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 Wayne, Michigan, using XGBoost record linkage.
Show:
This person
Anchor record
John Kowalski
Son · 1930 · age 19 · b. ~1911 · Michigan
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Sibling
Anna Kowalski
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Kowalski
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Kowalski
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kowalski
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Kowalski
Sibling · 1930 · age 14
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 — Wayne, Michigan
Open full size
1930 US Federal Census — Wayne, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1073:0531)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Laorta | 35 | Head | Laborer | Poland |
| 2 | Agnes Laorta | 34 | Wife | — | Poland |
| 3 | Helen Laorta | 16 | Daughter | — | Michigan |
| 4 | John Laorta | 14 | Son | — | Pennsylvania |
| 5 | Virginia Laorta | 7 | Daughter | — | Michigan |
| 6 | Wanda Laorta | 5 | Daughter | — | Michigan |
| 7 | Joseph Kalenowski | 41 | Head | Laborer | Poland |
| 8 | Anna Kalenowski | 37 | Wife | — | Poland |
| 9 | Edward Kalenowski | 16 | Son | — | New York |
| 10 | Lawrence Kalenowski | 14 | Son | — | New York |
| 11 | Stanley Kalenowski | 14 | Son | — | New York |
| 12 | Helen Kalenowski | 11 | Daughter | — | Michigan |
| 13 | Lilla Kalenowski | 9 | Daughter | — | Michigan |
| 14 | Andy Kryglarezyk | 40 | Head | Laborer | Poland |
| 15 | Mary Kryglarezyk | 40 | Wife | — | Poland |
| 16 | Anna Kryglarezyk | 12 | Daughter | — | Massachusetts |
| 17 | Walter Kryglarezyk | 8 | Son | — | Michigan |
| 18 | Eddy Kryglarezyk | 6 | Son | — | Michigan |
| 19 | Martin Sills | 37 | Head | Laborer | Poland |
| 20 | Bernice Sills | 36 | Wife | — | Poland |
| 21 | Amelia Sills | 9 | Daughter | — | Michigan |
| 22 | Julia Sills | 4 | Daughter | — | Michigan |
| 23 | Konstanty Bronkowski | 53 | Head | — | Poland |
| 24 | Mary Bronkowski | 51 | Wife | — | Poland |
| 25 | Anthony Bronkowski | 19 | Daughter | — | Massachusetts |
| 26 | Julia Bronkowski | 13 | Son | — | Massachusetts |
| 27 | Walter Bulski | 16 | Boarder | Laborer | Poland |
| 28 | Adam Czehowski | 42 | Boarder | Laborer | Poland |
| 29 | Theodore Camowicz | 43 | Head | Laborer | Poland |
| 30 | Mike Camowicz | 13 | Son | — | New York |
| 31 | Anna Camowicz | 11 | Daughter | — | Michigan |
| 32 | Alex Bulski | 19 | Boarder | Laborer | Michigan |
| 33 | Stanley Kowalski | 46 | Head | Laborer | Poland |
| 34 | John Kowalski THIS PERSON | 19 | Son | Laborer | Michigan |
| 35 | Stanley Kowalski | 16 | Son | — | Michigan |
| 36 | Irene Kowalski | 14 | Daughter | — | Michigan |
| 37 | Helen Kowalski | 12 | Daughter | — | Michigan |
| 38 | Anna Kowalski | 11 | Daughter | — | Michigan |
| 39 | Virginia Kowalski | 8 | Daughter | — | Michigan |
| 40 | Joseph Koshwaniceh | 22 | Boarder | Laborer | Poland |
| 41 | Lottie Koshwaniceh | 20 | Wife | — | Michigan |
| 42 | Alex Amarsaky | 41 | Head | Laborer | Poland |
| 43 | Atina Amarsaky | 37 | Wife | — | Poland |
| 44 | Anna Amarsaky | 9 | Daughter | — | Michigan |
| 45 | Julia Amarsaky | 6 | Daughter | — | Michigan |
| 46 | Don Amarsaky | 1 | Son | — | Michigan |
| 47 | Agnes Kmiecik | 32 | Head | Cigarmaker | Poland |
| 48 | Casper Kmiecik | 14 | Daughter | — | Michigan |
| 49 | Stella Kmiecik | 10 | Daughter | — | Michigan |
| 50 | Raymond Kmiecik | 8 | Son | — | 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)