AP
Alfred Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Edmunds-County, South Dakota
Our Model Tree links this Alfred Peterson across the 1910, 1920, 1930 and 1940 US Censuses in Edmunds-County, South Dakota (XGBoost, ~Confirmed), with identified parents Barney & Lena — first a head (b.~1899), then head of a 9-person household.
Age 41
b. ~1899
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Edmunds-County, South Dakota |
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Kent Township |
| 1935 Residence (County) | Edmunds |
| Additional Details | |
| Occupation | Committee man |
| Industry | A.A.A. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1380 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Committee Man |
| Township / Ward | Kent Township |
| Est. Birth Year | ~1899 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alfred | Age | Birth yr |
|---|---|---|---|---|
| Dazern Peterson | Son | — | 8 | ~1932 |
| Arnold Peterson | Son | — | 17 | ~1923 |
| Louis Cramer | Other | — | 27 | ~1913 |
| Gordon Peterson | Son | — | 10 | ~1930 |
| Wendel Peterson | Son | — | 12 | ~1928 |
| Vera Peterson | Daughter | — | 10 | ~1930 |
| Shirley Peterson | Daughter | — | 14 | ~1926 |
| Beulah Peterson | Spouse | — | 39 | ~1901 |
| Alfred Peterson | Head | — | 41 | ~1899 |
Census Appearances
1910
Edmunds, South …
Son, age 11
Edmunds, South Dakota · implied b. ~1899 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Edmunds, South …
Other, age 21
Edmunds, South Dakota · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | partner |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Edmunds, South …
Other, age 31
Edmunds, South Dakota · implied b. ~1899 — 24 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Alfred |
| Relationship to Head | O |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Edmunds-County, South …
Head, age 41
Edmunds-County, South Dakota · implied b. ~1899 — 9 household members
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Kent Township |
| 1935 Residence (County) | Edmunds |
| Occupation | Committee man |
| Industry | A.A.A. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1380 |
| Highest Grade | No 8 |
| 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 Alfred Peterson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Barney Peterson (~0.92 confidence) and mother Lena Peterson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Barney Peterson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Lena Peterson
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alfred Peterson
Head · 1940 · age 41 · b. ~1899 · South Dakota
★ 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 — Edmunds-County, South Dakota
Open full size
1940 US Federal Census — Edmunds-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03855-00385)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George J. Jones | 43 | Head | Laborer | South Dakota |
| 2 | Christina Jones | 44 | Wife | — | South Dakota |
| 3 | Marian Jones | 15 | Daughter | — | South Dakota |
| 4 | Merrett Jones | 11 | Son | — | South Dakota |
| 5 | James Jones | 5 | Son | — | South Dakota |
| 6 | Conrad Oleson | 39 | Brother-in-law | Laborer | South Dakota |
| 7 | Arthur Bowers | 32 | Head | Laborer | South Dakota |
| 8 | Velma Bowers | 32 | Wife | — | South Dakota |
| 9 | Beverly Bowers | 1 | Daughter | — | South Dakota |
| 10 | Albert O'Neill | 36 | Head | Laborer | Montana |
| 11 | Ferol O'Neill | 35 | Wife | — | South Dakota |
| 12 | Marjorie O'Neill | 4 | Daughter | — | South Dakota |
| 13 | Peggy O'Neill | 2 | Daughter | — | South Dakota |
| 14 | Della Hodson | 51 | Head | — | Wisconsin |
| 15 | Melvin Hodson | 26 | Son | Farmer | South Dakota |
| 16 | Marjorie Hodson | 21 | Daughter-in-law | — | South Dakota |
| 17 | Doris Williams | 27 | Boarder | Teacher | South Dakota |
| 18 | Alfred Peterson THIS PERSON | 41 | Head | Committee Man | Iowa |
| 19 | Beulah Peterson | 39 | Wife | — | South Dakota |
| 20 | Arnold Peterson | 17 | Son | — | South Dakota |
| 21 | Shirley Peterson | 14 | Daughter | — | South Dakota |
| 22 | Wendel Peterson | 12 | Son | — | South Dakota |
| 23 | Gordon Peterson | 10 | Son | — | South Dakota |
| 24 | Vera Peterson | 10 | Daughter | — | South Dakota |
| 25 | Dazern Peterson | 8 | Son | — | South Dakota |
| 26 | Louis Cramer | 27 | Hired hand | Laborer | South Dakota |
| 27 | Joseph Young | 53 | Head | Laborer | Iowa |
| 28 | Katherine Young | 54 | Wife | — | Canada (English) |
| 29 | John Pitz | 37 | Head | Laborer | Iowa |
| 30 | Mary Pitz | 27 | Wife | — | South Dakota |
| 31 | Merle Pitz | 7 | Son | — | South Dakota |
| 32 | Melvin Pitz | 4 | Son | — | South Dakota |
| 33 | Marylou Pitz | 1 | Daughter | — | South Dakota |
| 34 | Vacant | None | — | — | — |
| 35 | Henry Steger | 37 | Head | Laborer | South Dakota |
| 36 | Dorothy Steger | 29 | Wife | — | South Dakota |
| 37 | Courtney Steger | 12 | Son | — | South Dakota |
| 38 | Fern Steger | 11 | Daughter | — | South Dakota |
| 39 | Robert Steger | 9 | Son | — | South Dakota |
| 40 | Phyllis Steger | 6 | Daughter | — | South Dakota |
Pedigree Summary
Alfred
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)