MN
Martin Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Racine-County, Wisconsin
Our Model Tree links this Martin Nelson across the 1920, 1930 and 1940 US Censuses in Racine-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 4-person household.
Age 71
b. ~1869
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Racine-County, Wisconsin |
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Racine City |
| 1935 Residence (County) | Racine |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Contractor-Painter |
| Industry | House Painting |
| Class of Worker | OA |
| Hours Worked | 26 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Contractor-Painter |
| Township / Ward | Racine City |
| Est. Birth Year | ~1869 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martin | Age | Birth yr |
|---|---|---|---|---|
| Clara Nelson | Son | — | 48 | ~1892 |
| Rose Nelson | Daughter | — | 46 | ~1894 |
| Martin Nelson | Head | — | 71 | ~1869 |
| Lena Nelson | Spouse | — | 72 | ~1868 |
Census Appearances
1920
Racine, Wisconsin
Other, age 51
Racine, Wisconsin · implied b. ~1869 — 46 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Martin |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Painter |
| Industry | Contractor |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Denmark |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | denmark |
1930
Racine, Wisconsin
Head, age 61
Racine, Wisconsin · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 21 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Painter |
| Industry | House Painting |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | O |
| Home Value / Rent | 5100 |
| Radio Set | R |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Racine-County, Wisconsin
Head, age 71
Racine-County, Wisconsin · implied b. ~1869 — 4 household members
| Surname | Nelson |
| Given Name | Martin |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Racine City |
| 1935 Residence (County) | Racine |
| Naturalization Status | Naturalized |
| Occupation | Contractor-Painter |
| Industry | House Painting |
| Class of Worker | OA |
| Hours Worked | 26 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Martin Nelson
Head · 1940 · age 71 · b. ~1869 · Wisconsin
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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 — Racine-County, Wisconsin
Open full size
1940 US Federal Census — Racine-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04516-00861)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles H. Schneider | 61 | Head | Postal Clerk | Wisconsin |
| 42 | Sara E. Schneider | 58 | Wife | — | Illinois |
| 43 | Martin Nelson THIS PERSON | 71 | Head | Contractor-Painter | Denmark |
| 44 | Lena Nelson | 72 | Wife | — | Denmark |
| 45 | Clara Nelson | 48 | Son | Fruit Farmer | Wisconsin |
| 46 | Rose Nelson | 46 | Daughter | Bookkeeper | Wisconsin |
| 47 | Arthur C. Harris | 64 | Head | Sales Manager | Michigan |
| 48 | Love B. Harris | 46 | Wife | — | Wisconsin |
| 49 | Paul Wohlrat | 66 | Head | Repairman | Germany |
| 50 | Annie Wohlrat | 66 | Wife | — | Wisconsin |
| 51 | Arthur Wohlrat | 35 | Son | Machinist | Wisconsin |
| 52 | Ethel Wohlrat | 35 | Daughter | Winder | Wisconsin |
| 53 | Christian Brothersen | 58 | Head | Taxi-Cab Driver | Denmark |
| 54 | Marie Brothersen | 52 | Wife | — | Denmark |
| 55 | Isabel Didrick | 27 | Daughter | Comptometer Operator | Wisconsin |
| 56 | Jens C. Wilson | 51 | Head | Assembler | Denmark |
| 57 | Anna K. Wilson | 45 | Wife | — | Denmark |
| 58 | Gertrude Wilson | 20 | Daughter | Card Assorter | Illinois |
| 59 | June Wilson | 13 | Daughter | — | Iowa |
| 60 | Anton Jensen | 70 | Head | Spray-Painter | Denmark |
| 61 | Mary Jensen | 70 | Wife | — | Wisconsin |
| 62 | Christian Olsen | 30 | Head | Baker | Denmark |
| 63 | Eunice Olsen | 29 | Wife | — | Wisconsin |
| 64 | Raymond Olsen | 7 | Son | — | Wisconsin |
| 65 | Janet Olsen | 4 | Daughter | — | Wisconsin |
| 66 | Patricia Olsen | 1 | Daughter | — | Wisconsin |
| 67 | Ludwig Jensen | 58 | Head | Carpenter Shoe Repair | Denmark |
| 68 | Christine Jensen | 54 | Wife | — | Denmark |
| 69 | Richard Anderson | 21 | Lodger | Apprentice Carpenter | Wisconsin |
| 70 | Walter Thomsen | 47 | Head | Steamfitter | Minnesota |
| 71 | Edna Thomsen | 44 | Wife | — | Minnesota |
| 72 | Robert Thomsen | 17 | Son | — | Minnesota |
| 73 | Lorraine Thomsen | 16 | Daughter | — | Minnesota |
| 74 | James Thomsen | 13 | Son | — | Minnesota |
| 75 | Raymond Thomsen | 24 | Brother | Stock Clerk | Minnesota |
| 76 | Einar Nelson | 49 | Head | Plasterer | Denmark |
| 77 | Hannah Nelson | 46 | Wife | — | Wisconsin |
| 78 | Harriet Nelson | 18 | Daughter | Saleslady | Wisconsin |
| 79 | Laverne Nelson | 16 | Daughter | — | Wisconsin |
| 80 | Margaret Moylan | 21 | Lodger | Bookkeeper | Wisconsin |
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)