MO
Mary Olson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cuyahoga, Ohio
Our Model Tree links this Mary Olson across the 1930 and 1940 US Censuses in Cuyahoga, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 6
b. ~1924
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cuyahoga, Ohio |
| Surname | Olson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cleveland City |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Edward Olson | Son | — | 10 | ~1920 |
| Stella Olson | Other | — | 32 | ~1898 |
| Joseph Olson | Daughter | — | 12 | ~1918 |
| Edward Olson | Head | — | 41 | ~1889 |
| John Olson | Son | — | 8 | ~1922 |
| Helen Olson | Daughter | — | 10 | ~1920 |
| Mary Olson | Daughter | — | 6 | ~1924 |
| Stanley Olson | Son | — | 14 | ~1916 |
Census Appearances
1930
Cuyahoga, Ohio
Daughter, age 6
Cuyahoga, Ohio · implied b. ~1924 — 8 household members
| Surname | Olson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Daughter, age 17
Cuyahoga-County, Ohio · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Marion V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland City |
| 1935 Residence (County) | Cuyahoga |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 · 1930 · age 6 · b. ~1924 · Ohio
★ You are viewing this record
Sibling
Joseph Olson
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Olson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Olson
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Olson
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Olson
Sibling · 1930 · age 10
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
1930 US Federal Census — Cuyahoga, Ohio
Open full size
1930 US Federal Census — Cuyahoga, Ohio
Page Contents
26 people indexed on this census page (ia:1930:ohiocensus00reel1769:0755)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Klow | 67 | Head | — | Germany |
| 2 | Frank Surala | 47 | Head | Laborer | Czechoslovakia |
| 3 | Anna Surala | 39 | Wife-H | — | Czechoslovakia |
| 4 | Henry Surala | 17 | Son | Cutter | Czechoslovakia |
| 5 | James Surala | 11 | Son | — | Ohio |
| 6 | Anna Surala | 5 | Daughter | — | Ohio |
| 7 | Edward Olson | 41 | Head | Laborer | Poland |
| 8 | Stella Olson | 32 | Wife-H | — | Poland |
| 9 | Edward Olson | 10 | Son | News Paper | New Jersey |
| 10 | Stanley Olson | 14 | Son | — | West Virginia |
| 11 | Joseph Olson | 12 | Daughter | — | Ohio |
| 12 | Helen Olson | 10 | Daughter | — | Ohio |
| 13 | John Olson | 8 | Son | — | Ohio |
| 14 | Mary Olson THIS PERSON | 6 | Daughter | — | Ohio |
| 15 | James T. Harmon | 52 | Head | Brakeman | Canada English |
| 16 | Margaret Harmon | 45 | Wife-H | — | Ohio |
| 17 | James Shina | 54 | Head | Car Repairer | Czechoslovakia |
| 18 | Joseph Shina | 20 | Son | Laborer | Ohio |
| 19 | Anna Shina | 15 | Daughter | — | Ohio |
| 20 | Joseph Kalica | 43 | Head | Laborer | Czechoslovakia |
| 21 | Eva Kalica | 34 | Wife-H | — | Czechoslovakia |
| 22 | Joseph Kalica | 16 | Son | Laborer | Czechoslovakia |
| 23 | Andrew Kalica | 12 | Son | — | Czechoslovakia |
| 24 | Mary Kalica | 10 | Daughter | — | Czechoslovakia |
| 25 | Anna Kalica | 5 | Daughter | — | Ohio |
| 26 | John Kalica | 4 | Son | — | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)