MO
Mary Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bonneville-County, Idaho
Our Model Tree links this Mary Olson across the 1930 and 1940 US Censuses in Bonneville-County, Idaho (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 9-person household.
Age 43
b. ~1897
Female
Spouse
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bonneville-County, Idaho |
| Surname | Olson |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Idaho Falls |
| 1935 Residence (County) | Bonneville |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Idaho Falls |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Olson | Son | — | 8 | ~1932 |
| Hartley Olson | Son | — | 9 | ~1931 |
| Ralph Olson | Son | — | 3 | ~1937 |
| Iris Olson | Daughter | — | 16 | ~1924 |
| Cleo Olson | Daughter | — | 15 | ~1925 |
| Sylvan Olson | Head | — | 43 | ~1897 |
| Verl Olson | Son | — | 13 | ~1927 |
| Dale Olson | Son | — | 11 | ~1929 |
| Mary Olson | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Bonneville, Idaho
Other, age 33
Bonneville, Idaho · implied b. ~1897 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | May G. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 25 |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Bonneville-County, Idaho
Spouse, age 43
Bonneville-County, Idaho · implied b. ~1897 — 9 household members
| Surname | Olson |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Idaho Falls |
| 1935 Residence (County) | Bonneville |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Mary Olson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Olson
Spouse · 1940 · age 43 · b. ~1897 · Idaho
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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 — Bonneville-County, Idaho
Open full size
1940 US Federal Census — Bonneville-County, Idaho
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00741-00195)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Kikukawa | 12 | Daughter | — | Idaho |
| 2 | Kazuko Nishioka | 19 | Lodger | — | Idaho |
| 3 | Loraine A. Parrish | 32 | Head | Salesman | Kansas |
| 4 | Madeline Parrish | 28 | Wife | Secretary | Utah |
| 5 | Joseph A. Nielsen | 29 | Head | Barber | Idaho |
| 6 | Edna Nielsen | 30 | Wife | Operator | Idaho |
| 7 | Carol E. Nielsen | 5 | Daughter | — | Idaho |
| 8 | Sylvan Olson | 43 | Head | County Supervisor | Utah |
| 9 | Mary H. Olson THIS PERSON | 43 | Wife | — | Utah |
| 10 | Iris E. Olson | 16 | Daughter | Clerk | Idaho |
| 11 | Cleo M. Olson | 15 | Daughter | — | Idaho |
| 12 | Verl P. Olson | 13 | Son | — | Idaho |
| 13 | Dale R. Olson | 11 | Son | — | Idaho |
| 14 | Hartley E. Olson | 9 | Son | — | Idaho |
| 15 | Robert L. Olson | 8 | Son | — | Idaho |
| 16 | Ralph G. Olson | 3 | Son | — | Idaho |
| 17 | Margaret Lyfest | 43 | Head | Dry Cleaner | Iowa |
| 18 | Jack G. Baird | 23 | Head | Line Man | Utah |
| 19 | Betty Baird | 20 | Wife | — | Utah |
| 20 | Eugene P. Cutler | 34 | Head | Cook | Idaho |
| 21 | Bessie O. Cutler | 34 | Wife | — | Idaho |
| 22 | Merlan Philips | 8 | Son | — | Idaho |
| 23 | Lacksley R. Collins | 48 | Head | Carpenter | Illinois |
| 24 | Virginia Collins | 47 | Wife | — | Illinois |
| 25 | Rose R. Collins | 22 | Daughter | Office Girl | Idaho |
| 26 | James G. Collins | 18 | Son | Cook | Idaho |
| 27 | Jean C. Collins | 17 | Son | — | Idaho |
| 28 | Harriet N. Collins | 14 | Daughter | — | Idaho |
| 29 | Albert Church | 58 | Head | Clerk | Washington |
| 30 | Margaret Church | 22 | Wife | Bookkeeper | Tenn |
| 31 | Leila Church | 47 | Wife | — | Tenn |
| 32 | John Nielsen | 68 | Head | Farmer | Denmark |
| 33 | Helen Nielsen | 60 | Wife | — | Wisconsin |
| 34 | Arthur H. Evans | 74 | Head | Warehouse | Oklahoma |
| 35 | Maxine Evans | 71 | Wife | Housekeeper | Idaho |
| 36 | M. Kraditonia | 54 | Lodger | — | Wisconsin |
| 37 | Garcia Abuso | 32 | Lodger | Cook | Philippines |
| 38 | Donna Alaffen | 17 | Lodger | Homework | Idaho |
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)