MN
Martin Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Yankton-County, South Dakota
Our Model Tree links this Martin Nelson across the 1910, 1920, 1930 and 1940 US Censuses in Yankton-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 3-person household.
Age 73
b. ~1867
Male
Head
Born: Denmark
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Yankton-County, South Dakota |
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Denmark |
| 1935 Residence (City) | Gayville township |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | G 6 |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Farmer |
| Township / Ward | Gayville Township |
| Est. Birth Year | ~1867 |
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 Martin | Age | Birth yr |
|---|---|---|---|---|
| Viola Nelson | Other | — | 40 | ~1900 |
| Martin Nelson | Head | — | 73 | ~1867 |
| Melvin Nelson | Son | — | 43 | ~1897 |
Census Appearances
1910
Mclean, North …
Head, age 42
Mclean, North Dakota · implied b. ~1868 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Denmark |
| Years Married | 18 |
| Year of Immigration | 1892 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farming |
| Industry | General |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1920
Yankton, South …
Head, age 52
Yankton, South Dakota · implied b. ~1868 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farming |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Denmark |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | denmark |
1930
Yankton, South …
Other, age 63
Yankton, South Dakota · implied b. ~1867 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Martin L. |
| Relationship to Head | Father |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1886 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Laborer |
| Industry | Gen Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Yankton-County, South …
Head, age 73
Yankton-County, South Dakota · implied b. ~1867 — 3 household members
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Denmark |
| 1935 Residence (City) | Gayville township |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | G 6 |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 Martin Nelson across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martin Nelson
Head · 1940 · age 73 · b. ~1867 · 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 — Yankton-County, South Dakota
Open full size
1940 US Federal Census — Yankton-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03870-00078)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Manfred L. Roosen | 19 | Son | Laborer | South Dakota |
| 2 | George M. Roosen | 39 | Head | Renter Farmer | South Dakota |
| 3 | Madeline Roosen | 46 | Wife | — | South Dakota |
| 4 | Alice Roosen | 15 | Daughter | — | South Dakota |
| 5 | Florence Roosen | 12 | Daughter | — | South Dakota |
| 6 | Clarence Wrallo | 45 | Head | Renter Farmer | Iowa |
| 7 | Hulda B. Wrallo | 43 | Wife | — | South Dakota |
| 8 | Ab Marjorie | 18 | Daughter | Government Aide | South Dakota |
| 9 | Ab Marian | 17 | Daughter | Library Assistant | So Dakota |
| 10 | Daughter Betty | None | F | Nya | — |
| 11 | Son Earl | None | M | — | — |
| 12 | Son Paul | None | M | — | — |
| 13 | Son Lyle | None | M | — | — |
| 14 | Daughter Carol | None | F | — | — |
| 15 | Daughter Janice | None | F | — | — |
| 16 | Son Wayne | None | M | — | — |
| 17 | Daughter Amy | None | F | — | — |
| 18 | Daughter Ardyce | None | F | — | — |
| 19 | Son Milo | None | M | — | — |
| 20 | Martin P. Olson | 53 | Head | Renter | South Dak |
| 21 | Eva G. Olson | 47 | Wife | — | Nebraska |
| 22 | Elton M. Olson | 24 | Son | Car Salesman | South Dakota |
| 23 | Bennie Snow | 45 | Head | Renter | South Dakota |
| 24 | Delia E. Snow | 40 | Wife | — | South Dakota |
| 25 | Marjorie Snow | 18 | Daughter | — | South Dakota |
| 26 | Janice Snow | 16 | Daughter | — | South Dakota |
| 27 | Kenneth Snow | 14 | Son | — | South Dak |
| 28 | Henry G. Johnson | 34 | Head | Farmer | South Dak |
| 29 | Gina Pederson | 59 | Aunt | — | South Dak |
| 30 | Oliver Aseth | 60 | Head | Laborer | South Dak |
| 31 | Alfred Anderson | 33 | Head | Farmer | Nebraska |
| 32 | Marie Anderson | 27 | Wife | — | South Dakota |
| 33 | Marlys Ann Anderson | 1 | Daughter | — | South Dak |
| 34 | Joyce K. Anderson | 1 | Daughter | — | South Dak |
| 35 | Hans Miller | 24 | Head | Laborer | South Dakota |
| 36 | Lucile Miller | 26 | Wife | — | South Dakota |
| 37 | Marlan Turner | 5 | Step Son | — | South Dak |
| 38 | Martin Nelson THIS PERSON | 73 | Head | Farmer | Denmark |
| 39 | Melvin E. Nelson | 43 | Son | Farmer | South Dak |
| 40 | Viola Nelson | 40 | Daughter in Law | — | South Dakota |
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)