MP
Margaret Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, South Dakota
Our Model Tree links this Margaret Peterson across the 1930 and 1940 US Censuses in Union-County, South Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Female
Daughter
Born: South Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, South Dakota |
| Surname | Peterson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Alcester township |
| 1935 Residence (County) | Union |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | Alcester Township |
| Est. Birth Year | ~1925 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Wiona Peterson | Daughter | — | 5 | ~1935 |
| Arthur Peterson | Son | — | 19 | ~1921 |
| Leroy Peterson | Son | — | 17 | ~1923 |
| Marian Peterson | Daughter | — | 20 | ~1920 |
| Francis Peterson | Daughter | — | 14 | ~1926 |
| Margaret Peterson | Daughter | — | 15 | ~1925 |
| Beda Peterson | Spouse | — | 49 | ~1891 |
| Raymond Peterson | Son | — | 12 | ~1928 |
| Leona Peterson | Daughter | — | 10 | ~1930 |
| Carl Peterson | Head | — | 50 | ~1890 |
| Shirley Peterson | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Union, South …
Daughter, age 5
Union, South Dakota · implied b. ~1925 — 18 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Union-County, South …
Daughter, age 15
Union-County, South Dakota · implied b. ~1925 — 11 household members
| Surname | Peterson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | South Dakota |
| 1935 Residence (City) | Alcester township |
| 1935 Residence (County) | Union |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 Margaret Peterson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Peterson
Daughter · 1940 · age 15 · b. ~1925 · South Dakota
★ You are viewing this record
Sibling
Leroy Peterson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Peterson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Peterson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wiona Peterson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marian Peterson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leona Peterson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Peterson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Peterson
Sibling · 1940 · age 12
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 — Union-County, South Dakota
Open full size
1940 US Federal Census — Union-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03869-00036)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella Jaycox | 78 | Head | — | Wisconsin |
| 42 | Wilbur Jaycox | 42 | Son | — | South Dakota |
| 43 | Lloyd Heldt | 27 | Head | Farmer | Iowa |
| 44 | Eda Heldt | 27 | Wife | — | South Dakota |
| 45 | Hulda Heldt | 73 | Mother | — | Wisconsin |
| 46 | Theodore Brahms | 76 | Head | Farmer | Sweden |
| 47 | Hanna Brahms | 75 | Wife | — | Sweden |
| 48 | Carl H. Brahms | 47 | Son | Farming | South Dakota |
| 49 | David A. Brahms | 40 | Son | Farming | South Dakota |
| 50 | R. Charley Miller | 53 | Head | Farmer | Iowa |
| 51 | Olina Miller | 49 | Wife | — | South Dakota |
| 52 | Sadie Wormdahl | 28 | Lodger | — | South Dakota |
| 53 | Edward Dannbring | 43 | Head | Farmer | South Dakota |
| 54 | Helen Dannbring | 39 | Wife | — | South Dakota |
| 55 | Duane Dannbring | 10 | Son | — | South Dakota |
| 56 | Bernard Jurrens | 37 | Head | Farmer | South Dakota |
| 57 | Mary Jurrens | 37 | Wife | — | Iowa |
| 58 | Dolores Jurrens | 11 | Daughter | — | South Dakota |
| 59 | Duane Jurrens | 5 | Son | — | South Dakota |
| 60 | Donna Mae Jurrens | 4 | Daughter | — | South Dakota |
| 61 | Carl H. Peterson | 50 | Head | Farmer | Sweden |
| 62 | Beda Peterson | 49 | Wife | — | Sweden |
| 63 | Marian Peterson | 20 | Daughter | — | South Dakota |
| 64 | Arthur Peterson | 19 | Son | Farming | South Dakota |
| 65 | Leroy Peterson | 17 | Son | Farming | South Dakota |
| 66 | Margaret Peterson THIS PERSON | 15 | Daughter | — | South Dakota |
| 67 | Francis Peterson | 14 | Daughter | — | South Dakota |
| 68 | Raymond Peterson | 12 | Son | — | South Dakota |
| 69 | Leona Peterson | 10 | Daughter | — | South Dakota |
| 70 | Shirley Peterson | 8 | Daughter | — | South Dakota |
| 71 | Wiona Peterson | 5 | Daughter | — | South Dakota |
| 72 | Eigil Loken | 56 | Head | Farmer | Norway |
| 73 | Margrett Loken | 48 | Wife | — | Sweden |
| 74 | Lenord A. Loken | 17 | Son | Farmwork | South Dakota |
| 75 | Kent Loken | 14 | Son | — | South Dakota |
| 76 | Curtis Dimmick | 65 | Head | Farmer | Iowa |
| 77 | Martha Dimmick | 58 | Wife | — | Kansas |
| 78 | Glenn Dimmick | 25 | Son | Farming | Nebraska |
| 79 | Gladys Dimmick | 22 | Daughter-in-law | — | Iowa |
| 80 | Arthur Lind | 41 | Head | Farmer | South Dakota |
Related Census Records
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)