JN
John Nicholson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Nicholson across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1896), then head of a 3-person household.
Age 34
b. ~1896
Male
Head
Born: Sweden
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 31 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Occupation | Bricklayer |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 58.00 |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Bricklayer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1896 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Nicholson | Head | — | 34 | ~1896 |
| Arthur Nicholson | Son | — | 6 | ~1924 |
| Julia Nicholson | Spouse | — | 32 | ~1898 |
Census Appearances
1920
Cook, Illinois
Other, age 29
Cook, Illinois · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1906 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Bricklayer |
| Industry | Contractor |
| Class of Worker | S |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Head, age 34
Cook, Illinois · implied b. ~1896 — 3 household members
| Surname | Nicholson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 31 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Bricklayer |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 58.00 |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Other, age 49
Cook-County, Illinois · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | John A. |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Bricklayer |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Nicholson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Nicholson
Head · 1930 · age 34 · b. ~1896 · Illinois
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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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel488:0323)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eron Hoberg | 27 | Head | Cement | Sweden |
| 2 | Humped Hoberg | 25 | Wife | — | Sweden |
| 3 | Mary Ann Hoberg | 3 | Daughter | — | Illinois |
| 4 | Carl Holmdell | 47 | Head | Tailor | Norway |
| 5 | Celia Holmdell | 40 | Wife | — | Sweden |
| 6 | Gunda Holmdell | 19 | Daughter | Bookkeeper | Illinois |
| 7 | Myrne Begley | 73 | Head | — | Germany |
| 8 | Lulu Stockman | 37 | Daughter | Chief Operator | Illinois |
| 9 | Eva Scholl | 17 | Daughter | Switchboard | Illinois |
| 10 | Oscar Peterson | 50 | Head | Pattern Maker | Sweden |
| 11 | Goldy Peterson | 38 | Wife | — | Sweden |
| 12 | Frankie Peterson | 18 | Son | — | Illinois |
| 13 | William Austin | 27 | Head | Cashier | Georgia |
| 14 | Alene Austin | 26 | Wife | — | Georgia |
| 15 | June Austin | 5 | Daughter | — | Illinois |
| 16 | Olaf T. Walberg | 39 | Head | Janitor | Sweden |
| 17 | Nora Walberg | 35 | Wife | — | Illinois |
| 18 | Bernice Walberg | 6 | Daughter | — | Illinois |
| 19 | Robert Walberg | 4 | Son | — | Illinois |
| 20 | Mary J. Walberg | 1 | Daughter | — | Illinois |
| 21 | Jane K. Lowry | 64 | Head | — | New York |
| 22 | Robert E. Lowry | 32 | Son | Salesman | Illinois |
| 23 | Eric Ericson | 46 | Head | Butler | Sweden |
| 24 | Marie Ericson | 43 | Wife | — | France |
| 25 | John Nicholson THIS PERSON | 34 | Head | Bricklayer | Sweden |
| 26 | Julia Nicholson | 32 | Wife | — | Norway |
| 27 | Arthur Nicholson | 6 | Son | — | Illinois |
| 28 | Milton Williams | 27 | Head | Druggist | Illinois |
| 29 | Helen Williams | 26 | Wife | — | Illinois |
| 30 | Helen J. Williams | 3 | Daughter | — | Illinois |
| 31 | Helma Swanson | 47 | Head | — | Sweden |
| 32 | Albert Swanson | 24 | Son | Bus Driver | Illinois |
| 33 | Mildred Swanson | 19 | Daughter | Stenographer | Illinois |
| 34 | Christ Heinen | 46 | Head | Moving Operator | Germany |
| 35 | Andrew Peterson | 72 | Head | — | Sweden |
| 36 | Ida Peterson | 69 | Wife | — | Sweden |
| 37 | Ada Peterson | 40 | Daughter | — | Illinois |
| 38 | Herbert Carlson | 37 | Head | Salesman | Sweden |
| 39 | Ida Carlson | 67 | Mother | — | Sweden |
| 40 | Ernest N. Brady | 42 | Head | Bookseller | Northern Ireland |
| 41 | Elsie Brady | 51 | Wife | — | England |
| 42 | Norman Milner | 25 | Head | Post Office Clerk | Pennsylvania |
| 43 | Irene Milner | 30 | Wife | — | Illinois |
| 44 | Elena Sart | 60 | Head | — | New York |
| 45 | Edith Sart | 29 | Daughter | Stenographer | Illinois |
| 46 | Lois Sart | 24 | Daughter | Clerk | Illinois |
| 47 | John Danny | 34 | Head | Scenic Artist | Iowa |
| 48 | Ida Danny | 39 | Wife | Telephone | Michigan |
| 49 | David Hershenson | 62 | Head | — | Russia |
| 50 | Elizabeth Hershenson | 56 | Wife | — | Germany |
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)