JK
Joseph Kowalski — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cuyahoga, Ohio
Our Model Tree links this Joseph Kowalski across the 1920, 1930 and 1940 US Censuses in Cuyahoga, Ohio (XGBoost, ~Confirmed), with identified parents Marion — first a son (b.~1919), then head of a 7-person household.
Age 11
b. ~1919
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 | 11 |
| 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 | Cleveland City |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Sandy Kowalski | Other | — | 45 | ~1885 |
| Mary Kowalski | Daughter | — | 18 | ~1912 |
| Joseph Kowalski | Son | — | 11 | ~1919 |
| Bernice Kowalski | Daughter | — | 16 | ~1914 |
| Marion Kowalski | Head | — | 60 | ~1870 |
| Sophia Kowalski | Daughter | — | 14 | ~1916 |
| Betty Kowalski | Daughter | — | 9 | ~1921 |
Census Appearances
1920
Cuyahoga, Ohio
Other, age
Cuyahoga, Ohio · implied b. ~1920 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joe |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Austria |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 11
Cuyahoga, Ohio · implied b. ~1919 — 7 household members
| Surname | Kowalski |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 |
1940
Cuyahoga-County, Ohio
Other, age 21
Cuyahoga-County, Ohio · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kowalski |
| Given Name | Joe |
| Relationship to Head | Son in law |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Place |
| 1935 Residence (County) | Place |
| Occupation | Clerk Salesman |
| Industry | Retail Shoe Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 500 |
| Highest Grade | No 8 |
| 1935 Residence | Place |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Marion Kowalski (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Marion Kowalski
b. ~1870
Source father
● Household
· direct · ~0.92
This person
Anchor record
Joseph Kowalski
Son · 1930 · age 11 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Bernice Kowalski
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sophia Kowalski
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Kowalski
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kowalski
Sibling · 1930 · age 18
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:ohiocensus00reel1770:0484)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph F. Perlowski | 39 | Head | Salesman | Poland |
| 2 | Bernice Perlowski | 37 | Wife-H | — | Ohio |
| 3 | Delphine Perlowski | 8 | Daughter | — | Ohio |
| 4 | Joseph Perlowski | 6 | Son | — | Ohio |
| 5 | Norbert Perlowski | 4 | Son | — | Ohio |
| 6 | Ignatius Brzoska | 50 | Head | Core Carrier | Poland |
| 7 | Teodosia Brzoska | 39 | Wife-H | — | Ohio |
| 8 | John Brzoska | 21 | Son | Machinist | Ohio |
| 9 | Benedict Brzoska | 20 | Son | Machinist | Ohio |
| 10 | Helen Brzoska | 18 | Daughter | — | Ohio |
| 11 | Rita Brzoska | 15 | Daughter | — | Ohio |
| 12 | Irene Brzoska | 10 | Daughter | — | Ohio |
| 13 | Marion Kowalski | 60 | Head | Galvanizer | Poland |
| 14 | Sandy Kowalski | 45 | Wife-H | — | Poland |
| 15 | Mary Kowalski | 18 | Daughter | Dishwasher | Ohio |
| 16 | Bernice Kowalski | 16 | Daughter | Waitress | Ohio |
| 17 | Sophia Kowalski | 14 | Daughter | — | Ohio |
| 18 | Joseph Kowalski THIS PERSON | 11 | Son | — | Ohio |
| 19 | Betty Kowalski | 9 | Daughter | — | Ohio |
| 20 | Stanley Jurkiewicz | 39 | Head | Ruler | Poland |
| 21 | Frances Jurkiewicz | 34 | Wife-H | — | Pennsylvania |
| 22 | Anthony Jurkiewicz | 12 | Son | — | Ohio |
| 23 | John Jurkiewicz | 11 | Son | — | Ohio |
| 24 | Lucille Jurkiewicz | 9 | Son | — | Ohio |
| 25 | Joseph Jurkiewicz | 7 | Son | — | Ohio |
| 26 | Ronald Ruszkowski | 37 | Head | Wire Drawer | Poland |
| 27 | Thelma Ruszkowski | 32 | Wife-H | — | Poland |
| 28 | Raymond Ruszkowski | 13 | Son | — | Ohio |
| 29 | Mildred Ruszkowski | 11 | Daughter | — | Ohio |
| 30 | Eddy Ruszkowski | 9 | Daughter | — | Ohio |
| 31 | John Ruszkowski | 7 | Son | — | Ohio |
| 32 | Joe Celmer | 45 | Roomer | Laborer | Poland |
| 33 | John Maslanka | 36 | Head | Laborer | Poland |
| 34 | Bertha Maslanka | 33 | Wife-H | — | Poland |
| 35 | Adam Maslanka | 13 | Son | — | Ohio |
| 36 | Stanley Maslanka | 11 | Son | — | Ohio |
| 37 | Felicia Maslanka | 8 | Daughter | — | Ohio |
| 38 | Irene Maslanka | 6 | Daughter | — | Ohio |
| 39 | Mildred Maslanka | 4 | Daughter | — | Ohio |
| 40 | John Czajkowski | 55 | Head | Melter | Poland |
| 41 | Mary Czajkowski | 46 | Wife-H | — | Poland |
| 42 | Edward Czajkowski | 23 | Son | Electrician | Ohio |
| 43 | Anna Czajkowski | 21 | Daughter | Sales Lady | Ohio |
| 44 | Anna Czajkowski | 13 | Daughter | — | Ohio |
| 45 | William Wachowski | 29 | Head | Salesman | Ohio |
| 46 | Bernice Wachowski | 27 | Wife-H | — | Ohio |
| 47 | Roule M. Wachowski | 1 | Daughter | — | Ohio |
| 48 | William Wachowski | 0 | Son | — | Ohio |
| 49 | Stanley Czajkowski | 54 | Roomer | Laborer | Poland |
| 50 | Frank Wlodzynski | 53 | Head | Carpenter | Poland |
Pedigree Summary
Joseph + 4 siblings
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)