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Robert Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Martin-County, Minnesota
Our Model Tree links this Robert Jensen across the 1920, 1930 and 1940 US Censuses in Martin-County, Minnesota (XGBoost, ~Confirmed) — first a head (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Martin-County, Minnesota |
| Surname | Jensen |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Truman Village |
| 1935 Residence (County) | Martin |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Butter maker |
| Industry | Creamery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1496 |
| Highest Grade | No 8 |
| 1935 Residence | Minn |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Butter Maker |
| Township / Ward | Truman Village |
| Est. Birth Year | ~1897 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Jensen | Head | — | 43 | ~1897 |
| Anna Jensen | Spouse | — | 34 | ~1906 |
| Iris Jensen | Daughter | — | 4 | ~1936 |
| Lucille Jensen | Daughter | — | 12 | ~1928 |
| Violet Jensen | Daughter | — | 8 | ~1932 |
| William Jensen | Son | — | 1 | ~1939 |
Census Appearances
1920
Mcleod, Minnesota
Other, age 22
Mcleod, Minnesota · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Robert |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Denmark |
| Year of Immigration | 1915 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Birth Country | Denmark |
| Year of Naturalization | 1916 |
| Birthplace (normalized) | denmark |
1930
Martin, Minnesota
Head, age 32
Martin, Minnesota · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Robert E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1915 |
| Age at First Marriage | 20 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Manager |
| Industry | Creamery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 20 |
| Radio Set | R |
| Veteran | Yes WW |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Martin-County, Minnesota
Head, age 43
Martin-County, Minnesota · implied b. ~1897 — 6 household members
| Surname | Jensen |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Truman Village |
| 1935 Residence (County) | Martin |
| Naturalization Status | Naturalized |
| Occupation | Butter maker |
| Industry | Creamery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1496 |
| Highest Grade | No 8 |
| 1935 Residence | Minn |
| 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 Robert Jensen across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Robert Jensen
Head · 1940 · age 43 · b. ~1897 · Minnesota
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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 — Martin-County, Minnesota
Open full size
1940 US Federal Census — Martin-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01937-00658)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Jensen THIS PERSON | 43 | Head | Butter Maker | Denmark |
| 2 | Anna Jensen | 34 | Wife | Home Work | Minn |
| 3 | Lucille Jensen | 12 | Daughter | — | Minn |
| 4 | Violet Jensen | 8 | Daughter | — | Minn |
| 5 | Iris Jensen | 4 | Daughter | — | Minn |
| 6 | William Lee Jensen | 1 | Son | — | Minn |
| 7 | Burt Weldon | 37 | Head | Druggist | Minn |
| 8 | Mary Weldon | 38 | Wife | Home Work | Minn |
| 9 | Jean Weldon | 5 | Daughter | — | Minn |
| 10 | Ann Weldon | 2 | Daughter | — | Minn |
| 11 | G. J. Ulmen | 58 | Head | Publisher | Minn |
| 12 | Margaret C. Ulmen | 50 | Wife | Asst - | Ohio |
| 13 | Marjorie Q. Ulmen | 21 | Daughter | Student | No Dakota |
| 14 | John Ulmen | 18 | Son | — | Minn |
| 15 | Otto Bang | 33 | Head | Printer | Minn |
| 16 | Laura Bang | 28 | Wife | Home | Iowa |
| 17 | Otto Jr. Bang | 8 | Son | — | Minn |
| 18 | Lorine Wolf | 33 | Head | Cl. & Yardman | Minn |
| 19 | Hazel Wolf | 32 | Wife | Home | Minn |
| 20 | John Henry Wolf | 12 | Son | — | Minn |
| 21 | Forest Doolittle | 36 | Head | Manager | Minn |
| 22 | Muriel Doolittle | 39 | Wife | Assistant | Minn |
| 23 | Arloine Doolittle | 12 | Daughter | — | Minn |
| 24 | August Genk | 73 | Head | Blacksmith | Germany |
| 25 | Mary Genk | 69 | Wife | Home Work | Wisconsin |
| 26 | Harold Genk | 39 | Son | Welder | Minn |
| 27 | Carl Anderson | 53 | Head | Farmer | Norway |
| 28 | Irene Anderson | 38 | Wife | Home Keeper | So Dakota |
| 29 | Loretta Anderson | 5 | Daughter | — | So Dakota |
| 30 | Peggy Anderson | 2 | Daughter | — | So Dakota |
| 31 | Kate Clemons | 73 | Head | — | Iowa |
| 32 | Henry Lammi | 43 | Head | Trucker | Nebraska |
| 33 | Ida Lammi | 36 | Wife | Waitress | Minn |
| 34 | Mary Lou Lammi | 11 | Daughter | — | Minn |
| 35 | Richard Lammi | 5 | Son | — | Minn |
| 36 | Clarence Amborn | 62 | Head | Laborer | Illinois |
| 37 | Ida Amborn | 59 | Wife | House Keeper | Illinois |
| 38 | Ruby Amborn | 33 | Daughter | Home Work | Oklahoma |
| 39 | Norman Amborn | 20 | Son | Clerk | Minnesota |
| 40 | Wilma Amborn | 17 | Daughter | — | Minn |
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)