AP
Alfred Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Beadle-County, South Dakota
Our Model Tree links this Alfred Peterson across the 1920, 1930 and 1940 US Censuses in Beadle-County, South Dakota (XGBoost, ~Confirmed), with identified parents Christian & Chas — first a son (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Son
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Beadle-County, South Dakota |
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Wessington |
| 1935 Residence (County) | Beadle |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 76 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Laborer |
| Township / Ward | Wessington |
| Est. Birth Year | ~1910 |
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 Alfred | Age | Birth yr |
|---|---|---|---|---|
| Alfred Peterson | Son | — | 30 | ~1910 |
| Elva Peterson | Daughter | — | 16 | ~1924 |
| Ellamae Peterson | Daughter | — | 17 | ~1923 |
| Elsa Peterson | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Beadle, South …
Son, age 9
Beadle, South Dakota · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Illinois |
| Mother's Birthplace | South Dakota |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Beadle, South …
Son, age 19
Beadle, South Dakota · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Alfred R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | South Dakota |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Beadle-County, South …
Son, age 30
Beadle-County, South Dakota · implied b. ~1910 — 4 household members
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Wessington |
| 1935 Residence (County) | Beadle |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 76 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Christian Peterson (~0.92 confidence) and father Chas Peterson (~0.92 confidence) and mother Elsa Peterson (~0.92 confidence) and mother Elsa Peterson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Christian Peterson
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Chas Peterson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Elsa Peterson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Elsa Peterson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alfred Peterson
Son · 1940 · age 30 · b. ~1910 · South Dakota
★ You are viewing this record
Sibling
Ellamae Peterson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elva Peterson
Sibling · 1940 · age 16
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 — Beadle-County, South Dakota
Open full size
1940 US Federal Census — Beadle-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03847-00802)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elsa Peterson | 53 | Wife | — | South Dakota |
| 42 | Alfred Peterson THIS PERSON | 30 | Son | Laborer | South Dakota |
| 43 | Ellamae Peterson | 17 | Daughter | — | South Dakota |
| 44 | Elva Peterson | 16 | Daughter | — | South Dakota |
| 45 | Bert Morrow | 58 | Head | Laborer | Iowa |
| 46 | Arlene Morrow | 28 | Daughter | — | Iowa |
| 47 | Fred Williams | 54 | Head | Laborer | Belgium |
| 48 | Anna Williams | 51 | Wife | — | South Dakota |
| 49 | Edward Williams | 21 | Son | Laborer | South Dakota |
| 50 | Arthur Stratman | 49 | Head | Laborer | Nebraska |
| 51 | Carrie Stratman | 49 | Wife | — | Nebraska |
| 52 | Edward B Stratman | 19 | Son | — | Nebraska |
| 53 | Freda Stratman | 18 | Daughter | — | Nebraska |
| 54 | Milena Stratman | 16 | Daughter | — | Nebraska |
| 55 | Barbara Stratman | 15 | Daughter | — | Nebraska |
| 56 | Clarence Stratman | 8 | Son | — | South Dakota |
| 57 | Irving Rogers | 26 | Head | Laborer | South Dakota |
| 58 | Edith Rogers | 20 | Wife | — | South Dakota |
| 59 | Margaret Joan Rogers | 4 | Daughter | — | South Dakota |
| 60 | Donald Rogers | 2 | Son | — | South Dakota |
| 61 | Richard Rogers | 0 | Son | — | South Dakota |
| 62 | Fred Bonner | 60 | Head | Laborer | Germany |
| 63 | Lawrence Bonner | 22 | Son | Laborer | South Dakota |
| 64 | Hazel Bonner | 17 | Daughter | — | South Dakota |
| 65 | Richard Bonner | 14 | Son | — | South Dakota |
| 66 | Margaret Bonner | 12 | Daughter | — | South Dakota |
| 67 | Betty Bonner | 8 | Daughter | — | South Dakota |
| 68 | Neil Philips | 32 | Head | Laborer | South Dakota |
| 69 | Luella Philips | 72 | Mother | — | Iowa |
| 70 | Clarence Philips | 45 | Brother | Teacher | Iowa |
| 71 | John P Hoffmann | 45 | Head | Laborer | Iowa |
| 72 | Mary Hoffmann | 46 | Wife | — | South Dakota |
| 73 | Gilbert G Hoffmann | 13 | Son | — | South Dakota |
| 74 | Delora Ann Hoffmann | 11 | Daughter | — | South Dakota |
| 75 | Leland Maurice Hoffmann | 9 | Son | — | South Dakota |
| 76 | H. F. Ackerman | 69 | Head | Laborer | Wisconsin |
| 77 | Ruth Ackerman | 20 | Daughter | — | South Dakota |
| 78 | William E O'Neal | 27 | Head | Laborer | South Dakota |
| 79 | Alice O'Neal | 27 | Wife | — | South Dakota |
| 80 | Lyle O'Neal | 5 | Son | — | South Dakota |
Pedigree Summary
Alfred + 2 siblings
Gen 1 · 4 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)