RO
Robert Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Isanti-County, Minnesota
Our Model Tree links this Robert Olson across the 1920, 1930 and 1940 US Censuses in Isanti-County, Minnesota (XGBoost, ~Confirmed), with identified parents Peter & Fred — first a son (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Isanti-County, Minnesota |
| Surname | Olson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Maple Ridge Township |
| 1935 Residence (County) | Isanti |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Laborer |
| Township / Ward | Maple Ridge Township |
| Est. Birth Year | ~1914 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Peter Olson | Head | — | 75 | ~1865 |
| Raymond Olson | Son | — | 35 | ~1905 |
| Robert Olson | Son | — | 26 | ~1914 |
Census Appearances
1920
Isanti, Minnesota
Other, age 5
Isanti, Minnesota · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Robert |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Isanti, Minnesota
Son, age 15
Isanti, Minnesota · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Farm Labor |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Isanti-County, Minnesota
Son, age 26
Isanti-County, Minnesota · implied b. ~1914 — 3 household members
| Surname | Olson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Maple Ridge Township |
| 1935 Residence (County) | Isanti |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Robert Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peter Olson (~0.92 confidence) and father Fred Olson (~0.92 confidence) and mother Ida Olson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Olson
b. ~1865
Source father
● Household
· direct · ~0.92
Father
Fred Olson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Ida Olson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Olson
Son · 1940 · age 26 · b. ~1914 · Minnesota
★ You are viewing this record
Sibling
Raymond Olson
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Isanti-County, Minnesota
Open full size
1940 US Federal Census — Isanti-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01927-01056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Howard Sisson | 39 | Head | Farmer | South Dakota |
| 2 | Viola Sisson | 39 | Wife | — | Iowa |
| 3 | Eileen Sisson | 12 | Daughter | — | Minnesota |
| 4 | Warren Nelson | 45 | Head | Farmer | Minnesota |
| 5 | William Sprankle | 69 | Head | Farmer | Pennsylvania |
| 6 | Nina Sprankle | 67 | Wife | — | Minnesota |
| 7 | Herman Wetterstrom | 67 | Head | Farmer | Sweden |
| 8 | Lillian Wetterstrom | 42 | Daughter | — | Minnesota |
| 9 | Fred Wetterstrom | 34 | Son | Laborer | Minnesota |
| 10 | Gilbert Wetterstrom | 28 | Head | Painter | Minnesota |
| 11 | Carol Wetterstrom | 24 | Wife | — | Minnesota |
| 12 | Dale Wetterstrom | 5 | Son | — | Minnesota |
| 13 | William Wetterstrom | 1 | Son | — | Minnesota |
| 14 | Judith Wetterstrom | 0 | Daughter | — | Minnesota |
| 15 | Helding Carlson | 33 | Head | Farmer | Minnesota |
| 16 | Hazel Carlson | 28 | Wife | — | Minnesota |
| 17 | Lois Carlson | 6 | Daughter | — | Minnesota |
| 18 | Lowell Carlson | 3 | Son | — | Minnesota |
| 19 | Wesley Carlson | 1 | Son | — | Minnesota |
| 20 | Alvin Ogburn | 28 | Hired man | Laborer | Minnesota |
| 21 | Arthur W. Aberg | 45 | Head | Farmer | Minnesota |
| 22 | Agnes C. Aberg | 26 | Wife | — | Pennsylvania |
| 23 | Emma C. Aberg | 66 | Mother | — | Sweden |
| 24 | Bernard Tix | 32 | Head | Salesman | Minnesota |
| 25 | Myrtle Tix | 33 | Wife | — | Minnesota |
| 26 | Franklin Tix | 2 | Son | — | Minnesota |
| 27 | Jonas Hedman | 63 | Head | Dairyman | Minnesota |
| 28 | Herman Nasene | 36 | Head | Farmer | Minnesota |
| 29 | Frances Nasene | 35 | Wife | — | Minnesota |
| 30 | Sheldon Nasene | 4 | Son | — | Minnesota |
| 31 | Muriel Nasene | 1 | Daughter | — | Minnesota |
| 32 | Nels A. Nasene | 72 | Father | — | Sweden |
| 33 | Anna E. Nasene | 66 | Mother | — | Sweden |
| 34 | Lenore Nasene | 27 | Sister | Servant | Minnesota |
| 35 | Morris Larson | 32 | Head | Farmer | Minnesota |
| 36 | Ethel Larson | 32 | Wife | — | Minnesota |
| 37 | Lowell Larson | 4 | Son | — | Minnesota |
| 38 | Peter E. Olson | 75 | Head | Farmer | Sweden |
| 39 | Raymond Olson | 35 | Son | Laborer | Minnesota |
| 40 | Robert Olson THIS PERSON | 26 | Son | Laborer | Minnesota |
Pedigree Summary
Robert + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)