HP
Harold Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Walworth-County, Wisconsin
Our Model Tree links this Harold Peterson across the 1920, 1930 and 1940 US Censuses in Walworth-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Peter & Peter — first a son (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Walworth-County, Wisconsin |
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Walworth |
| Additional Details | |
| Occupation | Balance Wheel Machine Operator |
| Industry | Clock Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | C-1 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Balance Wheel Machine Operator |
| Township / Ward | Delavan |
| Est. Birth Year | ~1917 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Margaret Peterson | Spouse | — | 55 | ~1885 |
| Peter Peterson | Head | — | 57 | ~1883 |
| Harold Peterson | Son | — | 23 | ~1917 |
Census Appearances
1920
Walworth, Wisconsin
Son, age 3
Walworth, Wisconsin · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Mother Tongue | Danish |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Walworth, Wisconsin
Son, age 13
Walworth, Wisconsin · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Walworth-County, Wisconsin
Son, age 23
Walworth-County, Wisconsin · implied b. ~1917 — 3 household members
| Surname | Peterson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Walworth |
| Occupation | Balance Wheel Machine Operator |
| Industry | Clock Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | C-1 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Harold Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peter Peterson (~0.92 confidence) and father Peter Peterson (~0.92 confidence) and mother Margaret Peterson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Peterson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Peter Peterson
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Margaret Peterson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Peterson
Son · 1940 · age 23 · b. ~1917 · Wisconsin
★ 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 — Walworth-County, Wisconsin
Open full size
1940 US Federal Census — Walworth-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04531-00413)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Allen Allen | 27 | Son | Filling Station Attendant | Wisconsin |
| 2 | Laurence Allen | 16 | Son | — | Wisconsin |
| 3 | Philip Allen | 12 | Son | — | Wisconsin |
| 4 | Peter Peterson | 57 | Head | Janitor | Denmark |
| 5 | Margaret Peterson | 55 | Wife | — | Denmark |
| 6 | Harold Peterson THIS PERSON | 23 | Son | Balance Wheel Machine Operator | Wisconsin |
| 7 | Harry Stafford | 25 | Head | Truck Driver | Wisconsin |
| 8 | Florence Stafford | 25 | Wife | — | Indiana |
| 9 | Millard Reynolds | 36 | Head | Truck Driver | Wisconsin |
| 10 | Neomia Reynolds | 38 | Wife | — | Wisconsin |
| 11 | Matie Morgan | 56 | Head | — | Wisconsin |
| 12 | Glen Morgan | 21 | Son | Truck Driver | Wisconsin |
| 13 | Joyce Morgan | 16 | Daughter | — | Wisconsin |
| 14 | Jean Morgan | 14 | Daughter | — | Wisconsin |
| 15 | Theodore Kleine | 39 | Head | Warp Tyer | Germany |
| 16 | Eva Kleine | 37 | Wife | — | Indiana |
| 17 | Robert Youmans | 27 | Head | Truck Driver | Illinois |
| 18 | Doris Youmans | 23 | Wife | — | Wisconsin |
| 19 | George Biglow | 34 | Head | Trucker | Wisconsin |
| 20 | Leona Biglow | 34 | Wife | — | Illinois |
| 21 | Wayne Biglow | 6 | Son | — | Wisconsin |
| 22 | Roger Biglow | 5 | Son | — | Wisconsin |
| 23 | Laurence Rugg | 27 | Head | Shipping Clerk | Illinois |
| 24 | Marie Rugg | 40 | Wife | — | Illinois |
| 25 | Mary Ellen Rugg | 3 | Daughter | — | Wisconsin |
| 26 | Joe Yirch | 32 | Head | Tool & Die Setter | Austria|Hungary |
| 27 | Marcella Yirch | 32 | Wife | — | Wisconsin |
| 28 | Perry Burns | 36 | Head | Proprietor | Wisconsin |
| 29 | Lanta Burns | 35 | Wife | — | Wisconsin |
| 30 | Raymond Hiers | 38 | Head | Police Inspector | Wisconsin |
| 31 | Ruth Jane Hiers | 39 | Wife | Inspector | Wisconsin |
| 32 | Raymond Hiers | 9 | Son | — | Wisconsin |
| 33 | Randolph Hiers | 9 | Son | — | Wisconsin |
| 34 | Edward Long | 32 | Head | Laborer | Wisconsin |
| 35 | Mary Long | 33 | Wife | — | Wisconsin |
| 36 | Martha Jane Long | 11 | Daughter | — | Wisconsin |
| 37 | Betty Ann Long | 10 | Daughter | — | Wisconsin |
| 38 | Richard Edward Long | 8 | Son | — | Wisconsin |
| 39 | William Joseph Long | 5 | Son | — | Wisconsin |
| 40 | Patricia Louise Long | 4 | Daughter | — | Wisconsin |
Related Census Records
Pedigree Summary
Harold
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)