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Theodore Anderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Theodore Anderson across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Axel & Charles — first a head (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Anderson |
| Given Name | Theodore |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | shipping clerk |
| Industry | wholesale baking |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 226 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Shipping Clerk |
| Township / Ward | Chicago |
| Est. Birth Year | ~1905 |
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 Theodore | Age | Birth yr |
|---|---|---|---|---|
| Theodore Anderson | Head | — | 35 | ~1905 |
| Gladys Anderson | Daughter | — | 11 | ~1929 |
| Mildred Anderson | Spouse | — | 34 | ~1906 |
Census Appearances
1910
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Theodore E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Swed-Swedish |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 15
Cook, Illinois · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 26
Cook, Illinois · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 23 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Germany |
| Occupation | Truck Driver |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 35
Cook-County, Illinois · implied b. ~1905 — 3 household members
| Surname | Anderson |
| Given Name | Theodore |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | shipping clerk |
| Industry | wholesale baking |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 226 |
| Highest Grade | 8 |
| 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 Theodore Anderson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Axel Anderson (~0.92 confidence) and father Charles Anderson (~0.60 confidence) and father Oscar Anderson (~0.92 confidence) and mother Esther Anderson (~0.92 confidence) and mother Hanna Anderson (~0.92 confidence) and mother Mary Anderson (~0.60 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.81
Father
Axel Anderson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Charles Anderson
b. ~1893
Source father
● Household
· direct · ~0.6
Father
Oscar Anderson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Esther Anderson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Hanna Anderson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Anderson
b. ~1898
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Theodore Anderson
Head · 1940 · age 35 · b. ~1905 · 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-t0627-00952-00561)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Yurevich | 48 | head | Salesman | Lithuania |
| 42 | Katherine Yurevich | 40 | wife | — | Lithuania |
| 43 | John Yurevich | 23 | son | Helper | Illinois |
| 44 | Malvina Yurevich | 18 | daughter | Mess Worker | Illinois |
| 45 | Peter Petraitis | 55 | head | Janitor | Lithuania |
| 46 | Julia Petraitis | 50 | wife | — | Lithuania |
| 47 | Bruno Petraitis | 21 | son | — | Illinois |
| 48 | Albert Petraitis | 19 | son | — | Illinois |
| 49 | Anton Lippa | 52 | lodger | — | Lithuania |
| 50 | Robert J. Pearl | 60 | head | Dining Car Chef | England |
| 51 | Rebecca Pearl | 56 | wife | — | Illinois |
| 52 | Gladys Pearl | 28 | daughter | Stenographer | Illinois |
| 53 | Alice Pearl | 18 | daughter | — | Illinois |
| 54 | Olva E. Lawler | 58 | head | Foreman | Illinois |
| 55 | Gertrude Lawler | 53 | wife | — | Illinois |
| 56 | Clyde Lawler | 34 | son | Checker | Missouri |
| 57 | Arthur Karon | 49 | head | Carrier | Illinois |
| 58 | Elizabeth Karon | 45 | wife | — | Illinois |
| 59 | Evelyn Karon | 18 | daughter | — | Illinois |
| 60 | Edith Karon | 14 | daughter | — | Illinois |
| 61 | Herman Thieme | 42 | head | Stock Clerk | Illinois |
| 62 | Hazel Thieme | 33 | wife | Biller | Illinois |
| 63 | Joseph E. Kotal | 58 | head | Investigator | Illinois |
| 64 | Mae Kotal | 57 | wife | — | Illinois |
| 65 | Mildred Kotal | 23 | daughter | Saleswoman | Illinois |
| 66 | Richard Mccarthy | 25 | head | Livestock Buyer | Illinois |
| 67 | Melonie Mccarthy | 26 | wife | — | Illinois |
| 68 | Mary Caroline Mccarthy | 3 | daughter | — | Illinois |
| 69 | Diane Mccarthy | 1 | daughter | — | Illinois |
| 70 | Harry Lynch | 33 | head | Fireman | Illinois |
| 71 | Julia Lynch | 32 | wife | — | Connecticut |
| 72 | Patrick Lynch | 4 | son | — | Illinois |
| 73 | Eileen Lynch | 2 | daughter | — | Illinois |
| 74 | Robert Lynch | 0 | son | — | Illinois |
| 75 | Thomas K. Mattingly | 36 | head | Airplane Mechanic | Kentucky |
| 76 | Constance Mattingly | 34 | wife | — | Massachusetts |
| 77 | Kenneth Mattingly | 4 | son | — | Illinois |
| 78 | Theodore Anderson THIS PERSON | 35 | head | Shipping Clerk | Illinois |
| 79 | Mildred Anderson | 34 | wife | — | Illinois |
| 80 | Gladys Anderson | 11 | daughter | — | Illinois |
Pedigree Summary
Theodore
Gen 1 · 6 parents
~0.81
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)