RO
Ruth Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Ruth Olson across the 1920, 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed), with identified parents Andrew & Andrew — first a daughter (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Olson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | School Teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1100 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Teacher |
| Township / Ward | Rockford City |
| Est. Birth Year | ~1916 |
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 Ruth | Age | Birth yr |
|---|---|---|---|---|
| Edith Olson | Head | — | 60 | ~1880 |
| Ruth Olson | Daughter | — | 24 | ~1916 |
| John Olson | Son | — | 23 | ~1917 |
Census Appearances
1920
Winnebago, Illinois
Daughter, age 3
Winnebago, Illinois · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Winnebago, Illinois
Daughter, age 13
Winnebago, Illinois · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Daughter, age 24
Winnebago-County, Illinois · implied b. ~1916 — 3 household members
| Surname | Olson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford City |
| 1935 Residence (County) | Winnebago |
| Occupation | School Teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1100 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Ruth Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Olson (~0.92 confidence) and father Andrew Olsen (~0.92 confidence) and mother Edith Olson (~0.92 confidence) and mother Petra Olsen (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Olson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Andrew Olsen
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Edith Olson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Petra Olsen
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Olson
Daughter · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
John Olson
Sibling · 1940 · age 23
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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00915-00112)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Paul A. Engstrom | 45 | Son | — | Illinois |
| 42 | Edwin H. Carlson | 43 | Head | — | Illinois |
| 43 | Ruby Carlson | 43 | Wife | Factory Work | Illinois |
| 44 | Lucille Carlson | 13 | Daughter | — | Illinois |
| 45 | Gerald A. Carlson | 10 | Son | — | Illinois |
| 46 | Margie Carlson | 4 | Daughter | — | Illinois |
| 47 | Peter Petersen | 67 | Head | Milk Delivery | Denmark |
| 48 | Rosalia Petersen | 59 | Wife | — | Denmark |
| 49 | Celeste Bengtson | 46 | Head | Music Teacher | Illinois |
| 50 | Burt Bengtson | 49 | Brother | Machinist | Illinois |
| 51 | Roland Rainey | 24 | Lodger | Retail Mdse Store Manager | Illinois |
| 52 | — | None | — | — | — |
| 53 | Olive Knarr | 69 | Head | — | Illinois |
| 54 | Mary Mann | 73 | Servant | Housekeeper | Illinois |
| 55 | Clyde Mann | 27 | Head | City Bus Driver | Illinois |
| 56 | Elizabeth Mann | 26 | Wife | — | Illinois |
| 57 | Thomas L. Mann | 2 | Son | — | Illinois |
| 58 | Harry Clapsaddle | 70 | Head | — | Illinois |
| 59 | Emma Margaret Clapsaddle | 60 | Wife | — | Illinois |
| 60 | Harley B. Clapsaddle | 27 | Son | Machine Operator | Illinois |
| 61 | Lee Logan | 25 | Lodger | Attendant | Wisconsin |
| 62 | George Blackmer | 28 | Lodger | Laborer | Illinois |
| 63 | Joe Torica | 25 | Lodger | Baker | Illinois |
| 64 | John Martino | 24 | Lodger | Shipping Clerk | Illinois |
| 65 | Kenneth Chellgren | 22 | Lodger | Salesman | Illinois |
| 66 | Carl Nahlbom | 79 | Head | — | Sweden |
| 67 | Amelia Nahlbom | 72 | Wife | — | Sweden |
| 68 | Gunnar Robinson | 54 | Head | Proprietor | Sweden |
| 69 | Gertrude Robinson | 45 | Wife | — | Illinois |
| 70 | Wallace Robinson | 18 | Son | — | Illinois |
| 71 | Muriel Peterson | 20 | Daughter | — | Illinois |
| 72 | Sandra Peterson | 1 | Granddaughter | — | Illinois |
| 73 | Martin Kjellgren | 68 | Head | Furniture Chair Manager | Illinois |
| 74 | Nellis K. Kjellgren | 61 | Wife | — | Illinois |
| 75 | Stanley Kjellgren | 31 | Son | Lumber Salesman | Illinois |
| 76 | Leah Reish | 59 | Head | Manager | Wisconsin |
| 77 | — | 80 | Mother | — | Canada English |
| 78 | Edith R. Olson | 60 | Head | — | Illinois |
| 79 | Ruth Olson THIS PERSON | 24 | Daughter | School Teacher | Illinois |
| 80 | John A. Olson | 23 | Son | — | Illinois |
Pedigree Summary
Ruth + 1 sibling
Gen 1 · 4 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)