MT
Mary Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lucas-County, Ohio
Our Model Tree links this Mary Thomas across the 1920, 1930 and 1940 US Censuses in Lucas-County, Ohio (XGBoost, ~Confirmed), with identified parents John & Velma — first a daughter (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Female
Daughter
Born: Turkey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lucas-County, Ohio |
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Turkey |
| 1935 Residence (City) | Toledo City |
| 1935 Residence (County) | Lucas |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Stenographer |
| Industry | A. F. of L. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1560 |
| Highest Grade | C 2 |
| 1935 Residence | Same House |
| Birth Country | Turkey |
| Birthplace (normalized) | turkey |
| Occupation | Stenographer |
| Township / Ward | Toledo City |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Thomas | Daughter | — | 18 | ~1922 |
| Mary Thomas | Daughter | — | 30 | ~1910 |
| Selma Thomas | Head | — | 65 | ~1875 |
Census Appearances
1920
Lucas, Ohio
Daughter, age 9
Lucas, Ohio · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Turkey |
| Father's Birthplace | Turkey |
| Mother's Birthplace | Turkey |
| Speaks English | Yes |
| Mother Tongue | Greek |
| Birth Country | Turkey |
| Birthplace (normalized) | turkey |
1930
Lucas, Ohio
Daughter, age 20
Lucas, Ohio · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Turkey |
| Naturalization Status | Naturalized |
| Year of Immigration | 1913 |
| Father's Birthplace | Turkey |
| Mother's Birthplace | Turkey |
| Can Read/Write | Yes |
| Mother Tongue | Greek |
| Birth Country | Turkey |
| Birthplace (normalized) | turkey |
1940
Lucas-County, Ohio
Daughter, age 30
Lucas-County, Ohio · implied b. ~1910 — 3 household members
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Turkey |
| 1935 Residence (City) | Toledo City |
| 1935 Residence (County) | Lucas |
| Naturalization Status | Naturalized |
| Occupation | Stenographer |
| Industry | A. F. of L. |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1560 |
| Highest Grade | C 2 |
| 1935 Residence | Same House |
| Birth Country | Turkey |
| Birthplace (normalized) | turkey |
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 Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Thomas (~0.92 confidence) and mother Velma Thomas (~0.92 confidence) and mother Selma Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Thomas
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Velma Thomas
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Selma Thomas
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Thomas
Daughter · 1940 · age 30 · b. ~1910 · Ohio
★ You are viewing this record
Sibling
Mary Thomas
Sibling · 1940 · age 18
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 — Lucas-County, Ohio
Open full size
1940 US Federal Census — Lucas-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03261-00321)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lawrence H Harbauer | 32 | Head | Check Foreman | Ohio |
| 2 | Frances Harbauer | 33 | Wife | — | Ohio |
| 3 | Mary Sharon Harbauer | 10 | Daughter | — | Ohio |
| 4 | Emma E Sayers | 68 | Mother-in-law | — | Ohio |
| 5 | Stephen H Blyer | 64 | Head | Engineer | Ohio |
| 6 | Bessie Blyer | 60 | Wife | — | Indiana |
| 7 | Rolland Buzzard | 54 | Head | Chief Clerk | Ohio |
| 8 | Marguerite H Buzzard | 46 | Wife | — | Ohio |
| 9 | Ann Buzzard | 21 | Daughter | Sales Lady | Ohio |
| 10 | Peggy J Buzzard | 21 | Daughter | Sales Lady | Ohio |
| 11 | Peggy H Buzzard | 4 | Daughter | — | Ohio |
| 12 | Claudia Huber | 61 | Sister-in-law | — | Ohio |
| 13 | Harry A Rittredge | 53 | Head | Office Manager Service Dept | Canada |
| 14 | Daisy B Rittredge | 48 | Wife | — | Ohio |
| 15 | Jeanne Rittredge | 23 | Daughter | New Worker | Ohio |
| 16 | David Rittredge | 18 | Son | — | Ohio |
| 17 | Lucy A Black | 85 | Mother-in-law | — | Ohio |
| 18 | Harry Braithwaite | 53 | Head | Consultant | Ohio |
| 19 | Ethel M Braithwaite | 42 | Wife | Clerk | Ohio |
| 20 | Selma Thomas | 65 | Head | — | Turkey |
| 21 | Mary Thomas THIS PERSON | 30 | Daughter | Stenographer | Turkey |
| 22 | Mary Thomas | 18 | Daughter | — | Ohio |
| 23 | George Laskey | 48 | Head | Salesman | Ohio |
| 24 | Dorothea C Laskey | 42 | Wife | — | Ohio |
| 25 | Margaret Laskey | 19 | Daughter | — | Ohio |
| 26 | Ruth Ann Laskey | 16 | Daughter | — | Ohio |
| 27 | Joan Laskey | 15 | Daughter | — | Ohio |
| 28 | Charles J Renscher | 67 | Father-in-law | Salesman | Ohio |
| 29 | Carrie Renscher | 67 | Mother-in-law | — | Ohio |
| 30 | Harold W Franke | 33 | Head | Salesman Office | Ohio |
| 31 | Gladis B Franke | 33 | Wife | — | Michigan |
| 32 | Robert W Franke | 11 | Son | — | Ohio |
| 33 | Virginia M Franke | 6 | Daughter | — | Ohio |
| 34 | Richard W Franke | 2 | Son | — | Ohio |
| 35 | Hattie Franke | 62 | Mother | — | Ohio |
| 36 | William Mc Gowan | 73 | Head | Office Clerk | Ireland |
| 37 | Elizabeth Mc Gowan | 67 | Wife | — | Ohio |
| 38 | Almond Fischer | 56 | Head | Horticulturist | Ohio |
| 39 | Leila C Fischer | 45 | Wife | — | Ohio |
| 40 | Bonnie Jean Fischer | 20 | Daughter | — | Ohio |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 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)