MK
Martha King — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Minnehaha-County, South Dakota
Our Model Tree links this Martha King across the 1930 and 1940 US Censuses in Minnehaha-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 8-person household.
Age 40
b. ~1900
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Minnehaha-County, South Dakota |
| Surname | King |
| Given Name | Martha A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Sioux Falls City |
| 1935 Residence (County) | Minnehaha |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Sioux Falls City |
| Est. Birth Year | ~1900 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Emily King | Daughter | — | 16 | ~1924 |
| Marvin King | Son | — | 14 | ~1926 |
| Helen King | Daughter | — | 4 | ~1936 |
| Marvin King | Head | — | 41 | ~1899 |
| Clayton King | Son | — | 9 | ~1931 |
| Rosetta King | Daughter | — | 2 | ~1938 |
| Martha King | Spouse | — | 40 | ~1900 |
| Clarence King | Son | — | 11 | ~1929 |
Census Appearances
1930
Minnehaha, South …
Spouse, age 30
Minnehaha, South Dakota · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Martha E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 22 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Minnehaha-County, South …
Spouse, age 40
Minnehaha-County, South Dakota · implied b. ~1900 — 8 household members
| Surname | King |
| Given Name | Martha A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Sioux Falls City |
| 1935 Residence (County) | Minnehaha |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Martha King across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha King
Spouse · 1940 · age 40 · b. ~1900 · South Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Minnehaha-County, South Dakota
Open full size
1940 US Federal Census — Minnehaha-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03864-00433)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Harms | 30 | Head | Trucker | North Dakota |
| 42 | Euraque|Euraqua Harms | 28 | Wife | — | South Dakota |
| 43 | Donald Harms | 9 | Son | — | South Dakota |
| 44 | Lowell Harms | 8 | Son | — | South Dakota |
| 45 | Gerald Harms | 6 | Son | — | South Dakota |
| 46 | Virginia Harms | 4 | Daughter | — | South Dakota |
| 47 | Robin Harms | 1 | Son | — | South Dakota |
| 48 | Verne Hennings | 48 | Head | Laborer | Iowa |
| 49 | Selma A. Hennings | 38 | Wife | Caseer | Nebraska |
| 50 | Imogene Hennings | 18 | Daughter | Maid | South Dakota |
| 51 | Edward Hennings | 15 | Son | — | South Dakota |
| 52 | Raymond Hennings | 13 | Son | — | Minnesota |
| 53 | Darlene Hennings | 10 | Daughter | — | South Dakota |
| 54 | Duane Hennings | 6 | Son | — | South Dakota |
| 55 | Maynard Hennings | 4 | Son | — | South Dakota |
| 56 | Donna Lee Hennings | 2 | Daughter | — | South Dakota |
| 57 | Marvin King | 41 | Head | Store Man | Wisconsin |
| 58 | Martha A. King THIS PERSON | 40 | Wife | — | Minnesota |
| 59 | Emily King | 16 | Daughter | — | Minnesota |
| 60 | Marvin Jr. King | 14 | Son | — | Minnesota |
| 61 | Clarence King | 11 | Son | — | Minnesota |
| 62 | Clayton King | 9 | Son | — | South Dakota |
| 63 | Helen King | 4 | Daughter | — | South Dakota |
| 64 | Rosetta King | 2 | Daughter | — | South Dakota |
| 65 | Bert Miller | 37 | Head | Sheep Driver | Nebraska |
| 66 | Helen P. Miller | 23 | Wife | — | South Dakota |
| 67 | Marvin Miller | 7 | Son | — | South Dakota |
| 68 | Carol Miller | 6 | Daughter | — | South Dakota |
| 69 | Ronald Miller | 5 | Son | — | South Dakota |
| 70 | Irene Miller | 1 | Daughter | — | South Dakota |
| 71 | David H. Smith | 57 | Head | Cutter | Missouri |
| 72 | Vivian Smith | 60 | Wife | — | England |
| 73 | David H. Jr. Smith | 22 | Son | Trimmer | South Dakota |
| 74 | Elsie D. Smith | 20 | Wife | — | South Dakota |
| 75 | Elsie Smith | 0 | Daughter | — | South Dakota |
| 76 | Fred Baeline | 25 | Head | Laborer | Iowa |
| 77 | Jennie P. Baeline | 19 | Wife | — | South Dakota |
| 78 | Fred Jr. Baeline | 0 | Son | — | South Dakota |
| 79 | Lester N. Hayer | 23 | Head | Laborer | South Dakota |
| 80 | Eldora Hayer | 19 | Wife | — | Iowa |
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)