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Leonard Anderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Leonard Anderson across the 1910, 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents Alfred & Alfred — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Anderson |
| Given Name | Leonard A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rock Island |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Machine Operator |
| Industry | R. I. Arsenal |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | Hs 2 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machine Operator |
| Township / Ward | Moline City |
| Est. Birth Year | ~1910 |
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 1940 census.
| Name | Relation to head | Relative to Leonard | Age | Birth yr |
|---|---|---|---|---|
| Donna Jackson | Daughter | — | 10 | ~1930 |
| Leonard Anderson | Head | — | 30 | ~1910 |
| Adora Anderson | Spouse | — | 27 | ~1913 |
Census Appearances
1910
Henry, Illinois
Son, age
Henry, Illinois · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Leonard C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Henry, Illinois
Son, age 10
Henry, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Leonard S |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Henry, Illinois
Son, age 20
Henry, Illinois · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Leonard S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Head, age 30
Rock-Island-County, Illinois · implied b. ~1910 — 3 household members
| Surname | Anderson |
| Given Name | Leonard A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rock Island |
| 1935 Residence (County) | Rock Island |
| Occupation | Machine Operator |
| Industry | R. I. Arsenal |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | Hs 2 |
| 1935 Residence | Illinois |
| 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 Leonard Anderson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alfred Anderson (~0.92 confidence) and father Alfred Anderson (~0.92 confidence) and father Charles Anderson (~0.92 confidence) and mother Ada Anderson (~0.92 confidence) and mother Anna Anderson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alfred Anderson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Alfred Anderson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Charles Anderson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Ada Anderson
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Anna Anderson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Leonard Anderson
Head · 1940 · age 30 · b. ~1910 · 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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00875-00344)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | A. Reuben Rylander | 69 | Head | — | Illinois |
| 2 | Hilma Rylander | 67 | Wife | — | Illinois |
| 3 | Elmer R. Rylander | 36 | Son | Clerk | Illinois |
| 4 | Ruth V. Rylander | 30 | Daughter | — | Illinois |
| 5 | James R. Rylander | 7 | Grandson | — | Illinois |
| 6 | Glenn L. Rylander | 5 | Grandson | — | Illinois |
| 7 | Albert L. Carlson | 65 | Brother-in-law | — | Illinois |
| 8 | Alphonse De Haele | 49 | Head | Car Loader | Belgium |
| 9 | Camilla De Haele | 49 | Wife | — | Belgium |
| 10 | Andrew A. De Haele | 18 | Son | — | Illinois |
| 11 | Louis V. Murphy | 62 | Head | — | Illinois |
| 12 | Francis P. Murphy | 30 | Son | Assembler | Illinois |
| 13 | Amy Murphy | 24 | Daughter | — | Illinois |
| 14 | Hugh V. Bradley | 30 | Son-in-law | Printer | Illinois |
| 15 | Clara E. Bradley | 32 | Daughter | Manager | Illinois |
| 16 | William H. Cook | 62 | Head | — | Missouri |
| 17 | Anna J. Cook | 59 | Wife | — | Canada |
| 18 | Anton B. Hansen | 35 | Lodger | Medical Doctor | Illinois |
| 19 | Cyril De Smet | 51 | Head | Punch Press | Belgium |
| 20 | William Sandberg | 56 | Head | Janitor | Sweden |
| 21 | Minnie L. Sandberg | 49 | Wife | — | Illinois |
| 22 | Pearl E. Sandberg | 24 | Daughter | Clerk | Illinois |
| 23 | William S. Johnson | 39 | Head | Mech. (Experimental) | Illinois |
| 24 | Bertha P. Johnson | 32 | Wife | — | Illinois |
| 25 | Edward G. Johnson | 9 | Son | — | Illinois |
| 26 | Donald H. Johnson | 8 | Son | — | Illinois |
| 27 | Barbara A. Johnson | 7 | Daughter | — | Illinois |
| 28 | Arthur J. Johnson | 45 | Brother | Machine Operator | Illinois |
| 29 | Leonard A. Anderson THIS PERSON | 30 | Head | Machine Operator | Illinois |
| 30 | Adora E. Anderson | 27 | Wife | — | Illinois |
| 31 | Donna J. Jackson | 10 | Daughter | — | Illinois |
| 32 | James W. West | 31 | Head | Steel Worker | Illinois |
| 33 | Florence E. West | 31 | Wife | — | Illinois |
| 34 | Dolores C. West | 3 | Daughter | — | Illinois |
| 35 | Roy E. West | 2 | Son | — | Illinois |
| 36 | Wesley Horton | 27 | Head | Foreman-Printer | Wisconsin |
| 37 | Gwendolyn Horton | 23 | Wife | — | Iowa |
| 38 | Janice P. Horton | 0 | Son | — | Iowa |
| 39 | Robert H. Doerr | 33 | Head | In Furn. Study | Iowa |
| 40 | Reithel E. Doerr | 31 | Wife | — | Illinois |
Related Census Records
Pedigree Summary
Leonard
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)