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Mary Mcdonnell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this Mary Mcdonnell across the 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | McDonnell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland City |
| 1935 Residence (County) | Cuyahoga |
| Additional Details | |
| Occupation | artist |
| Industry | art project |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 26 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Artist |
| Township / Ward | Cleveland City |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Catherine Mcdonnell | Daughter | — | 17 | ~1923 |
| Mary Mcdonnell | Daughter | — | 19 | ~1921 |
| Steve Mcdonnell | Head | — | 55 | ~1885 |
| Rita Mcdonnell | Daughter | — | 11 | ~1929 |
| Jack Mcdonnell | Son | — | 15 | ~1925 |
| Julia Mcdonnell | Spouse | — | 52 | ~1888 |
| Steve Mcdonnell | Son | — | 27 | ~1913 |
Census Appearances
1930
Cuyahoga, Ohio
Daughter, age 9
Cuyahoga, Ohio · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Free Ireland |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Daughter, age 19
Cuyahoga-County, Ohio · implied b. ~1921 — 7 household members
| Surname | McDonnell |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland City |
| 1935 Residence (County) | Cuyahoga |
| Occupation | artist |
| Industry | art project |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 26 |
| Highest Grade | Hs 4 |
| 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 Mcdonnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcdonnell
Daughter · 1940 · age 19 · b. ~1921 · Ohio
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Sibling
Rita Mcdonnell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Steve Mcdonnell
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mcdonnell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Mcdonnell
Sibling · 1940 · age 15
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 — Cuyahoga-County, Ohio
Open full size
1940 US Federal Census — Cuyahoga-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03219-00094)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William E Rothacker | 39 | Head | Woodworker | Ohio |
| 2 | Laura Rothacker | 36 | Wife | — | Canada-English |
| 3 | Rollin Rothacker | 13 | Son | — | Ohio |
| 4 | Gilbert Rothacker | 9 | Son | — | Ohio |
| 5 | Wayne Rothacker | 6 | Son | — | Ohio |
| 6 | Edward P Rothacker | 28 | Head | — | Ohio |
| 7 | Loretta Ruchman | 42 | Daughter | — | Ohio |
| 8 | Molly Rothacker | 35 | Daughter | — | Ohio |
| 9 | Evelyn Rothacker | 25 | Daughter | Stenographer | Ohio |
| 10 | Clemence Rothacker | 20 | Son | Laborer | Ohio |
| 11 | Haywood Berry | 49 | Head | Burner | Virginia |
| 12 | Anna Berry | 39 | Wife | Chambermaid | Georgia |
| 13 | Sallie Sappington | 60 | Mother | — | Georgia |
| 14 | Julia Buzi | 51 | Head | Clothes Sorter | Hungary |
| 15 | Bill Buzi | 20 | Son | Potterman | Ohio |
| 16 | Mathilda Kushner | 34 | Head | — | Ohio |
| 17 | Helen Kushner | 32 | Sister | Wrapper | Ohio |
| 18 | William Kushner | 32 | Brother | Machinist | Ohio |
| 19 | Matt Bush | 48 | Head | Janitor | Hungary |
| 20 | Dora Bush | 43 | Wife | — | Hungary |
| 21 | Frank Bush | 19 | Son | — | Ohio |
| 22 | Irene Bush | 14 | Daughter | — | Ohio |
| 23 | Julia Fischer | 43 | Head | — | Ohio |
| 24 | William Fischer | 22 | Son | Surface Grinder | Ohio |
| 25 | Celia A Fischer | 21 | Daughter | Packer | Ohio |
| 26 | Eleanor Fischer | 19 | Daughter | New Worker | Ohio |
| 27 | August Fischer | 18 | Son | — | Ohio |
| 28 | Sophie Russel | 65 | Head | Maid | Germany |
| 29 | Steve Mcdonnell | 55 | Head | Laborer | Ohio |
| 30 | Julia Mcdonnell | 52 | Wife | — | Ohio |
| 31 | Steve Jr Mcdonnell | 27 | Son | Machinist | Ohio |
| 32 | Mary Mcdonnell THIS PERSON | 19 | Daughter | Artist | Ohio |
| 33 | Catherine Mcdonnell | 17 | Daughter | — | Ohio |
| 34 | Jack Mcdonnell | 15 | Son | — | Ohio |
| 35 | Rita Mcdonnell | 11 | Daughter | — | Ohio |
| 36 | Louise Zitavic | 48 | Head | Servant | Yugoslavia |
| 37 | Anthony Zitavic | 21 | Son | — | Ohio |
| 38 | Joseph Zitavic | 20 | Son | Laborer | Ohio |
| 39 | Louisa Zitavic | 18 | Daughter | New Worker | Ohio |
| 40 | Willie Wiggins | 55 | Head | Ambulance Driver | Alabama |
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)