WP
Walter Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Walter Peterson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Sophia — first a head (b.~1897), then head of a 5-person household.
Age 43
b. ~1897
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Maywood Village |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Teacher |
| Industry | College |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 3600 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Teacher |
| Township / Ward | Maywood Village |
| Est. Birth Year | ~1897 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Walter Peterson | Son | — | 4 | ~1936 |
| Reeve Peterson | Son | — | 2 | ~1938 |
| Marcia Peterson | Daughter | — | 1 | ~1939 |
| Walter Peterson | Head | — | 43 | ~1897 |
| Margery Peterson | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Cook, Illinois
Son, age 23
Cook, Illinois · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Sweden |
| Occupation | Teacher |
| Industry | Lewis Institute |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cook, Illinois
Head, age 33
Cook, Illinois · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Sweden |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | Yes WW |
| Home Value / Rent | O |
| Radio Set | 15000 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cook-County, Illinois
Head, age 43
Cook-County, Illinois · implied b. ~1897 — 5 household members
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Maywood Village |
| 1935 Residence (County) | Cook |
| Occupation | Teacher |
| Industry | College |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 3600 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Walter Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Peterson (~0.92 confidence) and mother Sophia Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Peterson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Sophia Peterson
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Peterson
Head · 1940 · age 43 · b. ~1897 · 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-t0627-00787-00602)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Luebker | 44 | Head | Clerk | Illinois |
| 2 | Mable Luebker | 45 | Wife | — | Illinois |
| 3 | Charles Luebker | 22 | Son | Cashier | Illinois |
| 4 | Lois Luebker | 20 | Daughter | Stenographer | Illinois |
| 5 | Thomas Luebker | 12 | Son | — | Illinois |
| 6 | George Bergman | 40 | Head | Owner And Manager | Illinois |
| 7 | Constance Bergman | 29 | Wife | — | Michigan |
| 8 | Marion Johnson | 15 | Niece | — | Illinois |
| 9 | Doris Johnson | 12 | Niece | — | Illinois |
| 10 | Alfred Theede | 37 | Head | Proprietor Dealer | Denmark |
| 11 | Margaret Theede | 30 | Wife | — | Illinois |
| 12 | Scott Theede | 2 | Son | — | Illinois |
| 13 | John Theede | 1 | Son | — | Illinois |
| 14 | Nellie Lynn | 71 | Aunt | — | Illinois |
| 15 | John Haenle | 36 | Head | Clerk | Illinois |
| 16 | Lillian Haenle | 32 | Wife | — | Pennsylvania |
| 17 | Robert Haenle | 13 | Son | — | Illinois |
| 18 | Richard Haenle | 11 | Son | — | Illinois |
| 19 | Patricia Haenle | 5 | Daughter | — | Illinois |
| 20 | Harry Powell | 40 | Head | Commercial Artist | Iowa |
| 21 | Edna Powell | 35 | Wife | — | Iowa |
| 22 | Bill Powell | 11 | Son | — | Iowa |
| 23 | Jack Powell | 6 | Son | — | Iowa |
| 24 | Chester Johnson | 39 | Head | Service Manager | Illinois |
| 25 | Esther Johnson | 36 | Wife | — | Illinois |
| 26 | Kenneth Johnson | 15 | Son | — | Illinois |
| 27 | Arthur Awey | 71 | Head | Accountant | Illinois |
| 28 | Mary Awey | 63 | Wife | — | Illinois |
| 29 | Dorothy Zureck | 31 | Daughter | — | Illinois |
| 30 | Thomas Zureck | 10 | Son-in-law | — | Illinois |
| 31 | Joan Zureck | 5 | Daughter | — | Illinois |
| 32 | Howard Awey | 35 | Son | Attendant | Illinois |
| 33 | Harry Keaton | 29 | Head | Postal Clerk | Illinois |
| 34 | Vivian Keaton | 22 | Wife | — | Illinois |
| 35 | Walter Peterson THIS PERSON | 43 | Head | Teacher | Iowa |
| 36 | Margery Peterson | 42 | Wife | — | Minnesota |
| 37 | Walter Peterson | 4 | Son | — | Minnesota |
| 38 | Reeve Peterson | 2 | Son | — | Illinois |
| 39 | Marcia Peterson | 1 | Daughter | — | Illinois |
| 40 | Ashley Mohr | 51 | Head | General Foreman | Canada |
Pedigree Summary
Walter
Gen 1 · 2 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)