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Joseph Kowalski — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cuyahoga, Ohio
Our Model Tree links this Joseph Kowalski across the 1920 and 1930 US Censuses in Cuyahoga, Ohio (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 12-person household.
Age 17
b. ~1913
Male
Son
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cuyahoga, Ohio |
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | City Of Cleveland |
| Est. Birth Year | ~1913 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Leona Kowalski | Daughter | — | 12 | ~1918 |
| Raymond Kowalski | Son | — | 6 | ~1924 |
| Rose Kowalski | Daughter | — | 11 | ~1919 |
| Monica Kowalski | Spouse | — | 36 | ~1894 |
| Virginia Kowalski | Daughter | — | 8 | ~1922 |
| Irene Kowalski | Daughter | — | 1 | ~1929 |
| Frank Kowalski | Head | — | 39 | ~1891 |
| Stanley Kowalski | Son | — | 14 | ~1916 |
| Dolores Kowalski | Daughter | — | 4 | ~1926 |
| Joseph Kowalski | Son | — | 17 | ~1913 |
| Stanley Kozak | Other | — | 35 | ~1895 |
| Sophie Kowalski | Daughter | — | 10 | ~1920 |
Census Appearances
1920
Cuyahoga, Ohio
Other, age 7
Cuyahoga, Ohio · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Adopted |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | none |
| Mother Tongue | Polish |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 17
Cuyahoga, Ohio · implied b. ~1913 — 12 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Joseph Kowalski across 2 US Census years (1920 and 1930) in Cuyahoga, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Kowalski
Son · 1930 · age 17 · b. ~1913 · Ohio
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Sibling
Sophie Kowalski
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leona Kowalski
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Kowalski
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Kowalski
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Kowalski
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Kowalski
Sibling · 1930 · age 14
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
Dolores Kowalski
Sibling · 1930 · age 4
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 — Cuyahoga, Ohio
Open full size
1930 US Federal Census — Cuyahoga, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1767:0115)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sophie Bierowski | 54 | Head | — | Poland |
| 2 | John Bierowski | 22 | Son | — | Ohio |
| 3 | Martin Bierowski | 21 | Son | Laborer | Poland |
| 4 | Victoria Bierowski | 38 | Wife | Contractor | Poland |
| 5 | Steve Bierowski | 8 | Son | — | Ohio |
| 6 | Rose Bierowski | 3 | Daughter | — | Ohio |
| 7 | Andrew Bierowski | 8 | Son | — | Ohio |
| 8 | Bernard Bierowski | 5 | Son | — | Ohio |
| 9 | John Bierowski | 3 | Son | — | Ohio |
| 10 | Alexandra Bierowski | 2 | Daughter | — | Ohio |
| 11 | John Kowalski | 44 | Head | — | Poland |
| 12 | Marion Kowalski | 37 | Wife | Laborer | Poland |
| 13 | Leo Kowalski | 14 | Son | — | Ohio |
| 14 | Sophie Kowalski | 13 | Daughter | — | Ohio |
| 15 | Frank Kowalski | 39 | Head | — | Poland |
| 16 | Monica Kowalski | 36 | Wife | Laborer | Poland |
| 17 | Joseph Kowalski THIS PERSON | 17 | Son | — | Ohio |
| 18 | Rose Kowalski | 11 | Daughter | — | Ohio |
| 19 | Stanley Kowalski | 14 | Son | — | Ohio |
| 20 | Leona Kowalski | 12 | Daughter | — | Ohio |
| 21 | Sophie Kowalski | 10 | Daughter | — | Ohio |
| 22 | Virginia Kowalski | 8 | Daughter | — | Ohio |
| 23 | Raymond Kowalski | 6 | Son | — | Ohio |
| 24 | Dolores Kowalski | 4 | Daughter | — | Ohio |
| 25 | Irene Kowalski | 1 | Daughter | — | Ohio |
| 26 | Stanley Kozak | 35 | Boarder | — | Poland |
| 27 | John Kozak | 35 | Head | Laborer | Poland |
| 28 | Mary Kozak | 27 | Wife | Laborer | Poland |
| 29 | Helen Kozak | 8 | Daughter | — | Ohio |
| 30 | Margaret Kozak | 4 | Daughter | — | Ohio |
| 31 | Joseph Kozak | 31 | Brother | Laborer | Poland |
| 32 | John Kozak | 33 | Head | Laborer | Poland |
| 33 | Mary Kozak | 27 | Wife | Laborer | Poland |
| 34 | John Kozak | 4 | Son | — | Ohio |
| 35 | Casimir Kole | 59 | Head | — | Poland |
| 36 | William A. Kole | 38 | Son | — | Ohio |
| 37 | Otto Eyling | 29 | Head | Foreman | Ohio |
| 38 | Florence Eyling | 22 | Wife | Bookkeeper | Ohio |
| 39 | John Kowalski | 40 | Head | — | Poland |
| 40 | Helen Kowalski | 31 | Wife | Undertaker | Poland |
| 41 | Alice Kowalski | 6 | Daughter | — | Ohio |
| 42 | Adeline Kowalski | 4 | Daughter | — | Ohio |
| 43 | John Kowalski | 2 | Son | — | Ohio |
| 44 | William Kruse | 46 | Head | Helper | Indiana |
| 45 | Mildred Kruse | 13 | Daughter | — | Ohio |
| 46 | William Kruse | 11 | Son | — | Ohio |
| 47 | Stanley Mierzejewski | 37 | Head | Truck Driver | Poland |
| 48 | Sophie Mierzejewski | 37 | Wife | — | Poland |
| 49 | Stanley Mierzejewski | 14 | Son | Waiter | Ohio |
| 50 | Joseph Mierzejewski | 12 | Son | Molder | Ohio |
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)