WP
Walter Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Louis-County, Missouri
Our Model Tree links this Walter Peterson across the 1920, 1930 and 1940 US Censuses in St.-Louis-County, Missouri (XGBoost, ~Confirmed), with identified parents Anna & Anna — first a son (b.~1905), then head of a 4-person household.
Age 35
b. ~1905
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Missouri |
| Surname | Peterson |
| Given Name | Walter C |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Bonhomme Township |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Occupation | truck foreman |
| Industry | W.P.A. Park |
| Class of Worker | GW |
| Hours Worked | 22 |
| Income (1939) | 430 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Truck Foreman |
| Township / Ward | Bonhomme Township |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Elva Peterson | Daughter | — | 37 | ~1903 |
| Anna Peterson | Spouse | — | 66 | ~1874 |
| August Peterson | Head | — | 63 | ~1877 |
| Walter Peterson | Son | — | 35 | ~1905 |
Census Appearances
1920
St Louis, …
Son, age 14
St Louis, Missouri · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Son, age 24
St Louis, Missouri · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Laborer |
| Industry | County Road |
| Class of Worker | 7871W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-County, Missouri
Son, age 35
St.-Louis-County, Missouri · implied b. ~1905 — 4 household members
| Surname | Peterson |
| Given Name | Walter C |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Bonhomme Township |
| 1935 Residence (County) | St. Louis |
| Occupation | truck foreman |
| Industry | W.P.A. Park |
| Class of Worker | GW |
| Hours Worked | 22 |
| Income (1939) | 430 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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: mother Anna Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and father August Peterson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Anna Peterson
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
August Peterson
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
Walter Peterson
Son · 1940 · age 35 · b. ~1905 · Missouri
★ You are viewing this record
Sibling
Elva Peterson
Sibling · 1940 · age 37
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
1940 US Federal Census — St.-Louis-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02147-00633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary F Hayden | 53 | wife | — | Kentucky |
| 42 | Walter J Hayden | 30 | son | Service Engineer | Kentucky |
| 43 | Lucille Wilson | 23 | lodger | Store Manager | Missouri |
| 44 | Prudence Wilson | 4 | lodger | — | Missouri |
| 45 | Arthur F Schlueter | 48 | head | Quarry Work | Missouri |
| 46 | Emma Schlueter | 38 | wife | — | Missouri |
| 47 | William Sr. Ries | 74 | head | Retired | Missouri |
| 48 | Sophie Ries | 60 | wife | — | Illinois |
| 49 | Rose E Ries | 38 | daughter | — | Missouri |
| 50 | William Jr. Ries | 34 | head | Mortar Mixer | Missouri |
| 51 | Emily E Ries | 32 | wife | — | Missouri |
| 52 | Leonard W Ries | 8 | son | — | Missouri |
| 53 | Erwin W Peterson | 40 | head | Truck Driver | Missouri |
| 54 | Helen M Peterson | 29 | wife | — | Missouri |
| 55 | Elaine D Peterson | 9 | daughter | — | Missouri |
| 56 | Leroy E Peterson | 7 | son | — | Missouri |
| 57 | Rodger Peterson | 6 | son | — | Missouri |
| 58 | Allan Peterson | 4 | son | — | Missouri |
| 59 | Don Peterson | 1 | son | — | Missouri |
| 60 | Charles Jenkerson | 23 | brother-in-law | Truck Driver | Missouri |
| 61 | Glenna Jenkerson | 22 | sister-in-law | — | Missouri |
| 62 | Julius J Thaman | 47 | head | — | Missouri |
| 63 | Anna H Thaman | 51 | wife | — | Missouri |
| 64 | Katherine Hagemann | 78 | mother-in-law | — | Missouri |
| 65 | Oscar E Koch | 39 | head | Carpenter | Missouri |
| 66 | Ruby D Koch | 25 | wife | — | Missouri |
| 67 | Shirley Koch | 1 | daughter | — | Missouri |
| 68 | August P Peterson | 63 | head | Rock Work | Missouri |
| 69 | Anna Peterson | 66 | wife | — | Missouri |
| 70 | Walter C Peterson THIS PERSON | 35 | son | Truck Foreman | Missouri |
| 71 | Elva Peterson | 37 | daughter | — | Missouri |
| 72 | Louis Hayward | 36 | head | Analyst | Illinois |
| 73 | Ethel K Hayward | 39 | wife | Pro-Musician | Missouri |
| 74 | William H Knobelock | 62 | head | Rate Clerk | Missouri |
| 75 | Amalia L Knobelock | 61 | wife | — | Missouri |
| 76 | Ruth Knobelock | 32 | daughter | Book-Keeper | Missouri |
| 77 | Louisa Fischer | 64 | sister-in-law | — | Missouri |
| 78 | Arnold Tenteberg | 87 | uncle | — | Missouri |
| 79 | Edward Mere | 71 | head | Farm Operator | Missouri |
| 80 | Matilda Mere | 66 | wife | — | Missouri |
Pedigree Summary
Walter + 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 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)