EN
Earl Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Earl Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Clarence & Robert — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Earl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Clerk |
| Industry | Candy factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Chicago |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Earl | Age | Birth yr |
|---|---|---|---|---|
| Mary Olson | Other | — | 74 | ~1866 |
| Earl Nelson | Son | — | 23 | ~1917 |
| Hilda Nelson | Spouse | — | 46 | ~1894 |
| Robert Nelson | Head | — | 51 | ~1889 |
Census Appearances
1920
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Earl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 13
Cook, Illinois · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Earl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 23
Cook-County, Illinois · implied b. ~1917 — 4 household members
| Surname | Nelson |
| Given Name | Earl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Clerk |
| Industry | Candy factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| 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 Earl Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Nelson (~0.92 confidence) and father Robert Nelson (~0.92 confidence) and mother Anna Nelson (~0.92 confidence) and mother Esther Nelson (~0.92 confidence) and mother Hilda Nelson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Nelson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Robert Nelson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Anna Nelson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Esther Nelson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Hilda Nelson
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Earl Nelson
Son · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00981-00188)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Johnson | 28 | Lodger | No | Minnesota |
| 42 | Charlotte Johnson | 5 | Daughter | — | Illinois |
| 43 | Mortimer Casey | 34 | Head | Fox Machine Operator | Illinois |
| 44 | Veronica Casey | 29 | Wife | — | Illinois |
| 45 | Adolph Kinly | 53 | Head | Dentist | Minnesota |
| 46 | Grace Kinly | 51 | Wife | Stenographer | Wisconsin |
| 47 | Irving Kiley | 45 | Head | Guard | Wisconsin |
| 48 | Elizabeth Kiley | 45 | Wife | — | Illinois |
| 49 | Catherine Kiley | 10 | Daughter | — | Illinois |
| 50 | Anne Kiley | 9 | Daughter | — | Illinois |
| 51 | Frank Pellegrini | 50 | Head | Manager | Italy |
| 52 | Bessie Pellegrini | 40 | Wife | Saleslady | Russia |
| 53 | Rosemary Pellegrini | 20 | Daughter | Packer | Illinois |
| 54 | Lois Pellegrini | 14 | Son | — | Illinois |
| 55 | Clara Pellegrini | 11 | Daughter | — | Illinois |
| 56 | Joseph Dehuorty | 51 | Head | Carpenter | Kentucky |
| 57 | Lillian Dehuorty | 49 | Wife | — | England |
| 58 | Helen Kupovicky | 22 | Daughter | — | Missouri |
| 59 | Nancy Foster | 10 | Niece | — | Illinois |
| 60 | Josephine Dory | 52 | Head | — | Canada |
| 61 | Julia Dory | 21 | Daughter | Saleslady | Illinois |
| 62 | Frank Haloun | 45 | Head | Polisher | Ohio |
| 63 | Margaret Haloun | 35 | Wife | — | Illinois |
| 64 | Edward Mclaughlin | 68 | Head | Mechanic | Illinois |
| 65 | Mary Mclaughlin | 63 | Wife | — | Illinois |
| 66 | Robert Nelson | 51 | Head | Mechanic | Illinois |
| 67 | Hilda Nelson | 46 | Wife | — | Illinois |
| 68 | Earl Nelson THIS PERSON | 23 | Son | Clerk | Illinois |
| 69 | Mary Olson | 74 | Mother-in-law | — | Sweden |
| 70 | Alphonse Lockwood | 30 | Head | Tester | Illinois |
| 71 | Grace Lockwood | 24 | Wife | Receptionist | Illinois |
| 72 | Bernhard Zierk | 60 | Head | Watchman | Illinois |
| 73 | Anna Zierk | 57 | Wife | — | Illinois |
| 74 | Jacob Vair | 24 | Head | Liner | Illinois |
| 75 | Marie Vair | 20 | Wife | — | Illinois |
| 76 | Dominick Nordi | 34 | Head | Candy Smelter | Italy |
| 77 | Catherine Nordi | 25 | Wife | — | Wisconsin |
| 78 | Ellen Mckinn | 61 | Head | — | Illinois |
| 79 | Mary Endthoff | 34 | Daughter | Weaver | Illinois |
| 80 | Jack Dehuorty | 25 | Head | Junior Clerk | Iowa |
Pedigree Summary
Earl
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)