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Clarence Nelson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Cook, Illinois
Our Model Tree links this Clarence Nelson across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Helga & Peter — first a son (b.~1904), then head of a 3-person household.
Age 16
b. ~1904
Male
Son
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Nelson |
| Given Name | Clarence |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1904 |
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 1920 census.
| Name | Relation to head | Relative to Clarence | Age | Birth yr |
|---|---|---|---|---|
| Ethel Nelson | Daughter | — | 18 | ~1902 |
| Helga Nelson | Head | — | 45 | ~1875 |
| Clarence Nelson | Son | — | 16 | ~1904 |
Census Appearances
1920
Cook, Illinois
Son, age 16
Cook, Illinois · implied b. ~1904 — 3 household members
| Surname | Nelson |
| Given Name | Clarence |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 27
Cook, Illinois · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelsen |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Illinois |
| Occupation | Mailman |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 37
Cook-County, Illinois · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelsen |
| Given Name | Clarence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Mail carrier |
| Industry | U.S. Post office |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 2100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Clarence Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Helga Nelson (~0.92 confidence) and father Peter Nelsen (~0.92 confidence) and mother Alma Nelsen (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Helga Nelson
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Peter Nelsen
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Alma Nelsen
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Nelson
Son · 1920 · age 16 · b. ~1904 · Illinois
★ You are viewing this record
Sibling
Ethel Nelson
Sibling · 1920 · 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
1920 US Federal Census — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu339unit:0662)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth Helmig | 6 | daughter | — | Kansas |
| 2 | Fred Boyd | 39 | Head | Cable Splicer | Indiana |
| 3 | Winifred Boyd | 38 | wife | None | New York |
| 4 | Ray Boyd | 30 | brother | Fireman | Indiana |
| 5 | Fred Schreiner | 30 | Head | Bookkeeper | Illinois |
| 6 | Mabel Schreiner | 28 | wife | None | Illinois |
| 7 | Gladys Schreiner | 6 | daughter | — | Illinois |
| 8 | Helen Schreiner | 2 | daughter | — | Illinois |
| 9 | Charles Hanneman | 58 | father-in-law | Cutter | Germany |
| 10 | Albert Wenstrom | 27 | Head | Trimmer | Illinois |
| 11 | Ruth Wenstrom | 26 | wife | None | Illinois |
| 12 | Myrtle Wenstrom | 3 | daughter | — | Illinois |
| 13 | Norman Toby | 30 | Head | Milk Dealer | Illinois |
| 14 | Marie Toby | 26 | wife | None | Illinois |
| 15 | Raymond Toby | 6 | son | — | Illinois |
| 16 | Charles Burchard | 28 | Head | Repair Man | Denmark |
| 17 | Inger Burchard | 28 | wife | Wash Woman | Norway |
| 18 | Lillian Burchard | 2 | daughter | — | Illinois |
| 19 | Charles Degner | 49 | Head | Assembler | Germany |
| 20 | Mary Degner | 49 | wife | None | Germany |
| 21 | Alma Degner | 24 | daughter | Saleslady | Illinois |
| 22 | Ida Degner | 20 | daughter | Saleslady | Illinois |
| 23 | Leon Lechert | 34 | Head | Bookkeeper | Illinois |
| 24 | Josephine Lechert | 29 | wife | None | Illinois |
| 25 | Eleanore Lechert | 5 | daughter | — | Illinois |
| 26 | Raymond Lechert | 3 | son | — | Illinois |
| 27 | William Wind | 44 | Head | Foreman | Illinois |
| 28 | Augusta Wind | 42 | wife | None | Germany |
| 29 | William Wind | 20 | son | Camera Man | Illinois |
| 30 | Richard Wind | 18 | son | Trimmer | Illinois |
| 31 | John Bock | 28 | Head | Janitor | Illinois |
| 32 | Lydia Bock | 25 | wife | Seamstress | Illinois |
| 33 | Fred Giede | 43 | Head | Teamster | Germany |
| 34 | Minnie Giede | 39 | wife | None | Germany |
| 35 | Ella Giede | 16 | daughter | Exchange Clerk | Illinois |
| 36 | William Giede | 11 | son | — | Illinois |
| 37 | Florence Giede | 10 | daughter | — | Illinois |
| 38 | Dorothy Giede | 7 | daughter | — | Illinois |
| 39 | Helga Nelson | 45 | Head | Proprietor | Norway |
| 40 | Ethel Nelson | 18 | daughter | Operator | Illinois |
| 41 | Clarence Nelson THIS PERSON | 16 | son | — | Illinois |
| 42 | John Patelsky | 50 | Head | Laborer | Poland |
| 43 | Frances Patelsky | 45 | wife | None | Poland |
| 44 | Walter Patelsky | 24 | son | Office Clerk | Illinois |
| 45 | Max Burton | 31 | Head | Polisher | Germany |
| 46 | Helen Burton | 28 | wife | None | Germany |
| 47 | Ethel Burton | 3 | daughter | — | Illinois |
| 48 | Lucille Burton | 1 | daughter | — | Illinois |
| 49 | Arvid Danielsson | 38 | Head | Carpenter | Sweden |
| 50 | Caroline Danielsson | 36 | wife | None | Sweden |
Pedigree Summary
Clarence + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)