MT
Mary Thornton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this Mary Thornton across the 1920, 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed), with identified parents James & Charles — first a daughter (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | Thornton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland |
| 1935 Residence (County) | Cuyahoga |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cleveland |
| Est. Birth Year | ~1914 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Thornton | Daughter | — | 26 | ~1914 |
| Katherine Thornton | Daughter | — | 19 | ~1921 |
| Helen Thornton | Daughter | — | 24 | ~1916 |
| James Thornton | Head | — | 62 | ~1878 |
| Bernard Thornton | Son | — | 16 | ~1924 |
| Thomas Thornton | Son | — | 21 | ~1919 |
Census Appearances
1920
Cuyahoga, Ohio
Daughter, age 5
Cuyahoga, Ohio · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thornton |
| Given Name | Marcella |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | W. Virginia |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Daughter, age 15
Cuyahoga, Ohio · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thornton |
| Given Name | Marcella |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | North Carolina |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Daughter, age 26
Cuyahoga-County, Ohio · implied b. ~1914 — 6 household members
| Surname | Thornton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland |
| 1935 Residence (County) | Cuyahoga |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Thornton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Thornton (~0.92 confidence) and father Charles Thornton (~0.92 confidence) and father Charles Thornton (~0.92 confidence) and mother Pauline Thornton (~0.92 confidence) and mother Ora Thornton (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Thornton
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Charles Thornton
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Charles Thornton
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Pauline Thornton
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Ora Thornton
b. ~1901
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Thornton
Daughter · 1940 · age 26 · b. ~1914 · Ohio
★ You are viewing this record
Sibling
Thomas Thornton
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Thornton
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Thornton
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Thornton
Sibling · 1940 · age 16
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-t0627-03218-00609)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Malloy | 55 | Head | — | Ohio |
| 2 | Patrick Malloy | 50 | Brother | City Inspector | Ohio |
| 3 | Margaret Malloy | 43 | Sister | Asst. Teacher | Ohio |
| 4 | James Quinn | 45 | Head | Core Maker | Ireland |
| 5 | Margaret Quinn | 52 | Wife | — | England |
| 6 | Michael Mcmahon | 66 | Lodger | — | Ohio |
| 7 | John Shea | 63 | Lodger | — | Pennsylvania |
| 8 | Archie Paul | 69 | Lodger | — | Pennsylvania |
| 9 | William Tremelling | 54 | Son-in-law | Watchman | England |
| 10 | Anna Tremelling | 54 | Daughter | — | Ireland |
| 11 | James Murphy | 46 | Lodger | Laborer | Ohio |
| 12 | Mary Kovachick | 53 | Lodger | Charwoman | Bohemia |
| 13 | Tony Kovachick | 20 | Lodger | Disabled | Ohio |
| 14 | Ellen Cunningham | 75 | Head | — | Ohio |
| 15 | Mary Cunningham | 50 | Daughter | Bookkeeper | Ohio |
| 16 | Hazel Cunningham | 35 | Daughter | School Teacher | Ohio |
| 17 | William Mcnigel | 63 | Head | — | Ohio |
| 18 | Walter Winslow | 45 | Lodger | Proprietor | Poland |
| 19 | Stella Winslow | 20 | Daughter | Beauty Operator | Ohio |
| 20 | Thomas Lee | 53 | Head | Operator | Ohio |
| 21 | Grace Lee | 53 | Wife | Cook | W. Virginia |
| 22 | Thomas C. Lee | 25 | Son | Truck Driver | Pennsylvania |
| 23 | James Thornton | 62 | Head | — | Ohio |
| 24 | Mary Thornton THIS PERSON | 26 | Daughter | — | Ohio |
| 25 | Helen Thornton | 24 | Daughter | Switchboard Operator | Ohio |
| 26 | Thomas Thornton | 21 | Son | Charger | Ohio |
| 27 | Katherine Thornton | 19 | Daughter | Inspector | Ohio |
| 28 | Bernard Thornton | 16 | Son | — | Ohio |
| 29 | William Ekelman | 39 | Head | Laborer | Ohio |
| 30 | Edna Ekelman | 39 | Wife | — | Ohio |
| 31 | Daniel Ekelman | 14 | Son | — | Ohio |
| 32 | Alonzo Baker | 60 | Head | Watchman | Ohio |
| 33 | Edith Baker | 57 | Wife | — | Ohio |
| 34 | Marie Ekelman | 82 | Mother-in-law | — | Germany |
| 35 | Fred Catanese | 33 | Head | Elevator Operator | Pennsylvania |
| 36 | Verna Catanese | 29 | Wife | — | Pennsylvania |
| 37 | Lester Catanese | 5 | Son | — | Ohio |
| 38 | Mary Mckeon | 62 | Head | — | Ohio |
| 39 | John Mckeon | 27 | Son | Truck Driver | Ohio |
| 40 | Mary Jane Mckeon | 24 | Daughter-in-law | — | Ohio |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)