WP
Walter Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Warren-County, Pennsylvania
Our Model Tree links this Walter Peterson across the 1920, 1930 and 1940 US Censuses in Warren-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Ludwig & Ida — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Pennsylvania |
| Surname | Peterson |
| Given Name | Walter L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | State College Center |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | C 2 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Carpenter |
| Township / Ward | Warren Borough |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| Dorothy Peterson | Daughter | — | 18 | ~1922 |
| Carl Peterson | Son | — | 9 | ~1931 |
| Walter Peterson | Son | — | 26 | ~1914 |
| Ida Peterson | Spouse | — | 52 | ~1888 |
| Ludwig Peterson | Head | — | 53 | ~1887 |
Census Appearances
1920
Warren, Pennsylvania
Son, age 5
Warren, Pennsylvania · implied b. ~1915
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Peterson |
| Given Name | Walter L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Warren, Pennsylvania
Son, age 16
Warren, Pennsylvania · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Warren-County, Pennsylvania
Son, age 26
Warren-County, Pennsylvania · implied b. ~1914 — 5 household members
| Surname | Peterson |
| Given Name | Walter L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | State College Center |
| Occupation | Carpenter |
| Industry | Building Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | C 2 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Ludwig Peterson (~0.92 confidence) and mother Ida Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ludwig Peterson
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Ida Peterson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Peterson
Son · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Carl Peterson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Peterson
Sibling · 1940 · age 18
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 — Warren-County, Pennsylvania
Open full size
1940 US Federal Census — Warren-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03619-00342)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James H. Weaver | 46 | Head | Glass Cutter For Mirrors | Pennsylvania |
| 2 | Ella W. Weaver | 38 | Wife | — | Pennsylvania |
| 3 | Donald Weaver | 15 | Son | — | Pennsylvania |
| 4 | Stephen E. Lawrence | 67 | Head | Any Type For Plywood | New York |
| 5 | Josephine Lawrence | 63 | Wife | — | Sweden |
| 6 | Dorothy Lawrence | 36 | Daughter | Saleslady | Pennsylvania |
| 7 | Donald E. Lawrence | 31 | Son | Laborer | Pennsylvania |
| 8 | Ludwig A. Peterson | 53 | Head | Carpenter | Sweden |
| 9 | Ida V. Peterson | 52 | Wife | — | Pennsylvania |
| 10 | Walter L. Peterson THIS PERSON | 26 | Son | Carpenter | Pennsylvania |
| 11 | Dorothy M. Peterson | 18 | Daughter | — | Pennsylvania |
| 12 | Carl A. Peterson | 9 | Son | — | Pennsylvania |
| 13 | Fred Reed | 33 | Head | Line-Man | Pennsylvania |
| 14 | Geneva E. Reed | 32 | Wife | — | Pennsylvania |
| 15 | John F. Reed | 5 | Son | — | Pennsylvania |
| 16 | Shirley E. Kapp | 67 | Head | Oil Producer | Pennsylvania |
| 17 | Bertha M. Kapp | 65 | Wife | — | Pennsylvania |
| 18 | Marie S. Kapp | 38 | Daughter | — | Pennsylvania |
| 19 | Lyle E. Conroe | 32 | Head | Pipeline Man | Pennsylvania |
| 20 | Anna L. Conroe | 33 | Wife | — | Pennsylvania |
| 21 | Norman H. Main | 46 | Head | Assistant Manager | Pennsylvania |
| 22 | Florence Main | 47 | Wife | — | Pennsylvania |
| 23 | Walter L. Main | 15 | Son | — | Pennsylvania |
| 24 | Virginia B. Main | 12 | Daughter | — | Pennsylvania |
| 25 | Hazel M. Winchester | 43 | Head | — | Pennsylvania |
| 26 | Marie V. Siffin | 18 | Daughter | — | Pennsylvania |
| 27 | Elizabeth J. Winchester | 11 | Daughter | — | Pennsylvania |
| 28 | William I. Duff | 62 | Head | Excavation | Canada |
| 29 | Edna B. Duff | 58 | Wife | — | Pennsylvania |
| 30 | William C. Jr. Duff | 21 | Son | Gravel Worker | Pennsylvania |
| 31 | Frank M. Mone | 69 | Head | Engineer | Pennsylvania |
| 32 | Lois W. Mone | 47 | Wife | — | Pennsylvania |
| 33 | Cora F. Reas | 24 | Roomer | Beautician | Pennsylvania |
| 34 | Jerrid P. Reas | 1 | Roomer | — | Pennsylvania |
| 35 | Begins Here | None | Canton | — | — |
| 36 | John V. Samuelson | 69 | Head | Cement Mixer | Sweden |
| 37 | Matilda Samuelson | 70 | Wife | — | Sweden |
| 38 | Anna Waples | 67 | Head | — | Pennsylvania |
| 39 | Catherine J. Waples | 37 | Daughter | General Housework | Pennsylvania |
| 40 | James G. Waples | 35 | Son | Boiler Fireman | Pennsylvania |
Related Census Records
Pedigree Summary
Walter + 2 siblings
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)