MP
Margaret Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Swift-County, Minnesota
Our Model Tree links this Margaret Peterson across the 1930 and 1940 US Censuses in Swift-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Swift-County, Minnesota |
| Surname | Peterson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Swift |
| 1935 Residence (County) | Swift |
| Additional Details | |
| Occupation | Housekeeping |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Housekeeping |
| Township / Ward | Six Mile Lake Twp T121 R40 |
| Est. Birth Year | ~1923 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Robert Peterson | Son | — | 13 | ~1927 |
| Margaret Peterson | Daughter | — | 17 | ~1923 |
| Elar Peterson | Son | — | 21 | ~1919 |
| Margaret Peterson | Spouse | — | 47 | ~1893 |
| Louis Peterson | Son | — | 19 | ~1921 |
| Ludvig Peterson | Head | — | 50 | ~1890 |
| Donald Peterson | Son | — | 10 | ~1930 |
| Dorothy Peterson | Daughter | — | 8 | ~1932 |
| Inga Peterson | Daughter | — | 12 | ~1928 |
| Derek Peterson | Son | — | 16 | ~1924 |
Census Appearances
1930
Swift, Minnesota
Daughter, age 7
Swift, Minnesota · implied b. ~1923 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Swift-County, Minnesota
Daughter, age 17
Swift-County, Minnesota · implied b. ~1923 — 10 household members
| Surname | Peterson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Swift |
| 1935 Residence (County) | Swift |
| Occupation | Housekeeping |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 17 · b. ~1923 · Minnesota
★ You are viewing this record
Sibling
Derek Peterson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Peterson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Peterson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Peterson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Inga Peterson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elar Peterson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Peterson
Sibling · 1940 · age 13
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 — Swift-County, Minnesota
Open full size
1940 US Federal Census — Swift-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01963-00424)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry J. Ahrendt | 52 | Head | Farmer | Nebraska |
| 2 | Dorothy M. Ahrendt | 42 | Wife | — | Iowa |
| 3 | Harold M. Ahrendt | 19 | Son | Laborer | Minnesota |
| 4 | Wallace L. Ahrendt | 17 | Son | Laborer | Minnesota |
| 5 | Melvin D. Ahrendt | 15 | Son | Farmer | Minnesota |
| 6 | Raymond L. Ahrendt | 13 | Son | — | Minnesota |
| 7 | Lorna Mae Ahrendt | 9 | Daughter | — | Minnesota |
| 8 | Shirley Ann Ahrendt | 5 | Daughter | — | Minnesota |
| 9 | Henry Jr. Ahrendt | 0 | Son | — | Minnesota |
| 10 | Andrew E. Kram | 66 | Head | Farmer | Minnesota |
| 11 | Josie E. Kram | 43 | Wife | — | Minnesota |
| 12 | Russell S. Kram | 18 | Son | Farmer | Minnesota |
| 13 | Henry J. Weber | 50 | Head | Farmer | Minnesota |
| 14 | Mary Weber | 42 | Wife | — | Minnesota |
| 15 | John H. Weber | 19 | Son | Laborer | Minnesota |
| 16 | Raymond E. Weber | 18 | Son | Laborer | Minnesota |
| 17 | Gabriel Burne | 22 | Hired man | Farmer Laborer | Minnesota |
| 18 | Alex J. Hanevek | 55 | Head | Farmer | Minnesota |
| 19 | Catherine Hanevek | 49 | Wife | — | Minnesota |
| 20 | Olaf A. Holm | 59 | Head | Farmer | Norway |
| 21 | Marie E. Holm | 49 | Wife | Sewing | Minnesota |
| 22 | Lawrence Holm | 22 | Son | Laborer | Minnesota |
| 23 | Elmer L. Holm | 20 | Son | Laborer | Minnesota |
| 24 | Milford A. Holm | 16 | Son | Laborer | Minnesota |
| 25 | Eloise A. Holm | 12 | Daughter | — | Minnesota |
| 26 | Ludvig P. Peterson | 50 | Head | Farmer | Minnesota |
| 27 | Margaret M. Peterson | 47 | Wife | — | Minnesota |
| 28 | Elar Peterson | 21 | Son | Farmer | Minnesota |
| 29 | Louis Peterson | 19 | Son | Farmer | Minnesota |
| 30 | Margaret Peterson THIS PERSON | 17 | Daughter | Housekeeping | Minnesota |
| 31 | Derek Peterson | 16 | Son | — | Minnesota |
| 32 | Robert Peterson | 13 | Son | — | Minnesota |
| 33 | Inga Peterson | 12 | Daughter | — | Minnesota |
| 34 | Donald Peterson | 10 | Son | — | Minnesota |
| 35 | Dorothy Peterson | 8 | Daughter | — | Minnesota |
| 36 | Eddie Helderstang | 49 | Head | Mechanic | Minnesota |
| 37 | Clara D. Helderstang | 49 | Wife | — | Minnesota |
| 38 | Wallace H. Helderstang | 13 | Son | — | Minnesota |
| 39 | Fred Stiel | 51 | Head | Farmer | Illinois |
| 40 | Theresa C. Stiel | 51 | Wife | — | Illinois |
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)