LM
Louis Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ziebach-County, South Dakota
Our Model Tree links this Louis Martin across the 1920, 1930 and 1940 US Censuses in Ziebach-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 9-person household.
Age 48
b. ~1892
Male
Head
Born: Bulgaria
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ziebach-County, South Dakota |
| Surname | Martin |
| Given Name | Louis D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Bulgaria |
| 1935 Residence (City) | T11-R24 |
| 1935 Residence (County) | Ziebach |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | farmer |
| Industry | farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 452 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth Country | Bulgaria |
| Birthplace (normalized) | bulgaria |
| Occupation | Farmer |
| Township / Ward | T11R24 |
| Est. Birth Year | ~1892 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Louis | Age | Birth yr |
|---|---|---|---|---|
| Louis Martin | Head | — | 48 | ~1892 |
| Margie Martin | Daughter | — | ~1940 | |
| Arvin Martin | Son | — | 6 | ~1934 |
| Florence Martin | Daughter | — | 18 | ~1922 |
| Harvey Martin | Son | — | 16 | ~1924 |
| Wayne Martin | Son | — | 13 | ~1927 |
| Lynelle Martin | Daughter | — | 4 | ~1936 |
| Gertrude Martin | Spouse | — | 34 | ~1906 |
| Darlene Martin | Daughter | — | 9 | ~1931 |
Census Appearances
1920
Ziebach, South …
Other, age 25
Ziebach, South Dakota · implied b. ~1895 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Louis |
| Relationship to Head | Hired man |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Bulgaria |
| Year of Immigration | 1906 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Bulgaria |
| Mother's Birthplace | Bulgaria |
| Occupation | Ranch hand |
| Industry | Cattle ranch |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Bulgarian |
| Birth Country | Bulgaria |
| Birthplace (normalized) | bulgaria |
1930
Ziebach, South …
Head, age 33
Ziebach, South Dakota · implied b. ~1897 — 22 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Bulgaria |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 25 |
| Father's Birthplace | Bulgaria |
| Mother's Birthplace | Bulgaria |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Mother Tongue | Bulgarian |
| Home Owned/Rented | O |
| Birth Country | Bulgaria |
| Birthplace (normalized) | bulgaria |
1940
Ziebach-County, South …
Head, age 48
Ziebach-County, South Dakota · implied b. ~1892 — 9 household members
| Surname | Martin |
| Given Name | Louis D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Bulgaria |
| 1935 Residence (City) | T11-R24 |
| 1935 Residence (County) | Ziebach |
| Naturalization Status | Naturalized |
| Occupation | farmer |
| Industry | farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 452 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth Country | Bulgaria |
| Birthplace (normalized) | bulgaria |
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 Louis Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Louis Martin
Head · 1940 · age 48 · b. ~1892 · 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 — Ziebach-County, South Dakota
Open full size
1940 US Federal Census — Ziebach-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03870-00625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Hingman | 30 | Head | Farmer | South Dakota |
| 2 | Mary Hingman | 25 | wife | — | South Dakota |
| 3 | Patty Ann Hingman | 1 | daughter | — | South Dakota |
| 4 | Johanna Hingman | 50 | Head | Farmer | South Dakota |
| 5 | Paul Hingman | 19 | son | Carpenter Work | South Dakota |
| 6 | Louis D. Martin THIS PERSON | 48 | Head | Farmer | Bulgaria |
| 7 | Gertrude Martin | 34 | wife | — | Iowa |
| 8 | Florence A. Martin | 18 | daughter | Stenographer | South Dakota |
| 9 | Harvey Martin | 16 | son | New Worker | South Dakota |
| 10 | Wayne Martin | 13 | son | — | South Dakota |
| 11 | Darlene Martin | 9 | daughter | — | South Dakota |
| 12 | Arvin Martin | 6 | son | — | South Dakota |
| 13 | Lynelle Martin | 4 | daughter | — | South Dakota |
| 14 | Margie Martin | 0 | daughter | — | South Dakota |
| 15 | Lawrence Abey | 43 | Head | Farmer | Missouri |
| 16 | Josephine Abey | 33 | wife | — | Kansas |
| 17 | Rose Ann Abey | 10 | daughter | — | South Dakota |
| 18 | Evelyn June Abey | 7 | daughter | — | South Dakota |
| 19 | Grace Irene Abey | 2 | daughter | — | South Dakota |
| 20 | John W. Abey | 84 | father | — | Missouri |
| 21 | Alfred T. Austin | 68 | Head | Farmer | Iowa |
| 22 | Christian Hansen | 39 | Head | Farmer | South Dakota |
| 23 | Eline Hansen | 45 | wife | — | Denmark |
| 24 | Norma Jean Hansen | 11 | daughter | — | South Dakota |
| 25 | Hjalmer Nordvold | 57 | Head | Ranches | Minnesota |
| 26 | Emma Nordvold | 54 | wife | — | South Dakota |
| 27 | Myron Maher | 29 | Head | Farmer | South Dakota |
| 28 | Mary Maher | 29 | wife | — | Kansas |
| 29 | Robert Maher | 3 | son | — | South Dakota |
| 30 | Mary Maher | 0 | daughter | — | South Dakota |
| 31 | Steve Kost | 48 | Head | Farmer | Russia |
| 32 | Helena Kost | 51 | wife | — | Russia |
| 33 | John Ab Kost | 15 | son | — | South Dakota |
| 34 | Anna Kost | 14 | daughter | — | South Dakota |
| 35 | Anton Kost | 13 | son | — | South Dakota |
| 36 | Nick Kost | 12 | son | — | South Dakota |
| 37 | John Little Eagle | 37 | Head | Farmer | South Dakota |
| 38 | Louise Little Eagle | 23 | wife | — | South Dakota |
| 39 | Elizabeth Little Eagle | 3 | daughter | — | South Dakota |
| 40 | Nancy Little Eagle | 2 | daughter | — | 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)