MO
Mary Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baraga-County, Michigan
Our Model Tree links this Mary Olson across the 1930 and 1940 US Censuses in Baraga-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baraga-County, Michigan |
| Surname | Olson |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Baraga |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Lanse Township |
| Est. Birth Year | ~1926 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Olson | Daughter | — | 14 | ~1926 |
| Olaf Olson | Head | — | 49 | ~1891 |
| Robert Olson | Son | — | 13 | ~1927 |
| Daniel Olson | Son | — | 17 | ~1923 |
| Charles Olson | Son | — | 8 | ~1932 |
| Amanda Olson | Spouse | — | 44 | ~1896 |
| John Olson | Son | — | 4 | ~1936 |
Census Appearances
Daughter, age 4
Baraga, Michigan · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Norway |
| Mother's Birthplace | Finland |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Baraga-County, Michigan
Daughter, age 14
Baraga-County, Michigan · implied b. ~1926 — 7 household members
| Surname | Olson |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Baraga |
| Highest Grade | 8 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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
Daughter · 1940 · age 14 · b. ~1926 · Michigan
★ You are viewing this record
Sibling
Charles Olson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Olson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Olson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Olson
Sibling · 1940 · age 17
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 — Baraga-County, Michigan
Open full size
1940 US Federal Census — Baraga-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01725-00226)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Peter H. Flynn | 42 | Brother-in-law | Road Construction | Michigan |
| 42 | Lena H. Flynn | 39 | Daughter | Laborer | Norway |
| 43 | Alfred P. Flynn | 16 | Grandson | Window Washer | Michigan |
| 44 | Mary K. Flynn | 14 | Granddaughter | — | Michigan |
| 45 | Virginia H. Flynn | 11 | Granddaughter | — | Michigan |
| 46 | Donald S. Flynn | 10 | Grandson | — | Michigan |
| 47 | Hannah A. Tollefson | 32 | Daughter | Teacher | Michigan |
| 48 | James R. Johnston | 61 | Head | Park Laborer | Michigan |
| 49 | Carrie J. Johnston | 70 | Wife | — | Michigan |
| 50 | Henry Hendrickson | 60 | Lodger | Sawyer | Michigan |
| 51 | Olaf C. Olson | 49 | Head | Welfare Director | Norway |
| 52 | Amanda Olson | 44 | Wife | — | Finland |
| 53 | Daniel H. Olson | 17 | Son | — | Michigan |
| 54 | Mary A. Olson THIS PERSON | 14 | Daughter | — | Michigan |
| 55 | Robert Olson | 13 | Son | — | Michigan |
| 56 | Charles W. Olson | 8 | Son | — | Michigan |
| 57 | John E. Olson | 4 | Son | — | Michigan |
| 58 | William Laronde | 67 | Head | Road Construction | Michigan |
| 59 | Adeline Laronde | 55 | Wife | — | Vermont |
| 60 | Rosemary B. Reynolds | 22 | Head | Waitress | California |
| 61 | John C. Westerberg | 45 | Head | Night Watchman | Michigan |
| 62 | Lenore C. Westerberg | 42 | Wife | — | Wisconsin |
| 63 | Ralph C. Westerberg | 24 | Son | Deck Hand | Michigan |
| 64 | Alf A. Johnson | 41 | Head | Road Construction | Norway |
| 65 | Lily D. Johnson | 34 | Wife | — | Michigan |
| 66 | Alfred Anderson | 53 | Head | Clean-Up Man | Michigan |
| 67 | Pearl E. Anderson | 53 | Wife | — | Michigan |
| 68 | Eugene J. Warren | 59 | Head | Indian Field Agent | Minnesota |
| 69 | Carrie O. Warren | 56 | Wife | — | Minnesota |
| 70 | Lois A. Warren | 27 | Daughter | Proprietor | Minnesota |
| 71 | Joy Warren | 18 | Daughter | — | Minnesota |
| 72 | Hope Warren | 18 | Daughter | — | Minnesota |
| 73 | Alf A. Vandse | 30 | Head | Lumber Handler | Michigan |
| 74 | Beatrice O. Vandse | 20 | Wife | — | Michigan |
| 75 | Brian L. Vandse | 1 | Son | — | Michigan |
| 76 | Irving A. Tollefson | 33 | Head | Timekeeper | Michigan |
| 77 | May G. Tollefson | 29 | Wife | — | Michigan |
| 78 | Dolores M. Tollefson | 10 | Daughter | — | Michigan |
| 79 | Oliver A. Denoker | 40 | Head | Mechanic | Michigan |
| 80 | Esther M. Denoker | 32 | Wife | — | Michigan |
Related Census Records
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)