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Mary Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this Mary Mcgrath across the 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 11-person household.
Age 17
b. ~1923
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | McGrath |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland |
| 1935 Residence (County) | Cuyahoga |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Garfield Hts |
| Est. Birth Year | ~1923 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joan Mcgrath | Daughter | — | 8 | ~1932 |
| Margaret Mcgrath | Daughter | — | 13 | ~1927 |
| Teresa Mcgrath | Daughter | — | 10 | ~1930 |
| Mary Mcgrath | Daughter | — | 17 | ~1923 |
| Eileen Mcgrath | Daughter | — | 9 | ~1931 |
| Dennis Mcgrath | Head | — | 45 | ~1895 |
| Edward Mcgrath | Son | — | 16 | ~1924 |
| John Mcgrath | Son | — | 21 | ~1919 |
| William Mcgrath | Son | — | 19 | ~1921 |
| Thomas Mcgrath | Son | — | 14 | ~1926 |
| Helen Mcgrath | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Cuyahoga, Ohio
Daughter, age 6
Cuyahoga, Ohio · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Daughter, age 17
Cuyahoga-County, Ohio · implied b. ~1923 — 11 household members
| Surname | McGrath |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland |
| 1935 Residence (County) | Cuyahoga |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Ohio |
| 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 Mcgrath across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcgrath
Daughter · 1940 · age 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
Teresa Mcgrath
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mcgrath
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mcgrath
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcgrath
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcgrath
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcgrath
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Mcgrath
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Mcgrath
Sibling · 1940 · age 8
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-t0627-03053-00189)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Lola | 46 | Head | Machinist | Lithuania |
| 2 | Helen Lola | 35 | Wife | — | West Virginia |
| 3 | Frank Jr. Lola | 8 | Son | — | Ohio |
| 4 | William Bonker | 49 | Head | Sheet Metal Worker | Ohio |
| 5 | Ida Bonker | 46 | Sister | Proprietor | Ohio |
| 6 | John Bonker | 43 | Brother | Maintenance Worker | Ohio |
| 7 | Albert Neugebauer | 39 | Head | Truck Dispatcher | Ohio |
| 8 | Katherine Neugebauer | 34 | Wife | — | Austria |
| 9 | Katherine Neugebauer | 0 | Daughter | — | Ohio |
| 10 | Mildred Neugebauer | 0 | Daughter | — | Ohio |
| 11 | Louis Cipra | 60 | Head | Carpenter | Czechoslovakia |
| 12 | Anna Cipra | 61 | Wife | — | Czechoslovakia |
| 13 | Emma Soukup | 65 | Sister-in-law | — | Czechoslovakia |
| 14 | Gilbert Robertson | 51 | Head | Decorator | Scotland |
| 15 | Nancy Robertson | 43 | Wife | — | Kentucky |
| 16 | Catherine Robertson | 12 | Daughter | — | Ohio |
| 17 | John Robertson | 9 | Son | — | Ohio |
| 18 | Arthur Downey | 56 | Head | Proprietor | Indiana |
| 19 | Theresa Downey | 54 | Wife | Housekeeper | Czechoslovakia |
| 20 | Harry Downey | 20 | Son | Attendant | Ohio |
| 21 | William Downey | 18 | Son | Salesman | Ohio |
| 22 | Dennis Mcgrath | 45 | Head | Milk Route | Eire Ireland |
| 23 | Helen Mcgrath | 40 | Wife | — | Ohio |
| 24 | John Mcgrath | 21 | Son | Extra Truck Driver | Ohio |
| 25 | William Mcgrath | 19 | Son | Timekeeper | Ohio |
| 26 | Mary Mcgrath THIS PERSON | 17 | Daughter | — | Ohio |
| 27 | Edward Mcgrath | 16 | Son | — | Ohio |
| 28 | Thomas Mcgrath | 14 | Son | — | Ohio |
| 29 | Margaret Mcgrath | 13 | Daughter | — | Ohio |
| 30 | Teresa Mcgrath | 10 | Daughter | — | Ohio |
| 31 | Eileen Mcgrath | 9 | Daughter | — | Ohio |
| 32 | Joan Mcgrath | 8 | Daughter | — | Ohio |
| 33 | Henry Niemann | 67 | Head | Minister | Germany |
| 34 | Laura Niemann | 41 | Wife | — | Iowa |
| 35 | Loretta Nachtrieb | 37 | Head | Saleslady | Ohio |
| 36 | June Nachtrieb | 17 | Daughter | — | Ohio |
| 37 | Walter Weber | 54 | Head | Millwright | Ohio |
| 38 | Mary Weber | 60 | Wife | — | Germany |
| 39 | Daniel Taggart | 39 | Head | Truck Driver | West Virginia |
| 40 | Violet Taggart | 46 | Wife | — | Louisiana |
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)