DT
Donald Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kent-County, Michigan
Our Model Tree links this Donald Thomas across the 1920, 1930 and 1940 US Censuses in Kent-County, Michigan (XGBoost, ~Confirmed), with identified parents Emery & Mabel — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kent-County, Michigan |
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Grand Rapids City |
| 1935 Residence (County) | Kent |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 780 |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Chauffeur |
| Township / Ward | Grand Rapids City |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Donald Thomas | Son | — | 31 | ~1909 |
| Edna Thomas | Daughter | — | 29 | ~1911 |
| Carl Thomas | Son | — | 25 | ~1915 |
| Emery Thomas | Head | — | 57 | ~1883 |
| Mary Thomas | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Kent, Michigan
Son, age 11
Kent, Michigan · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Kent, Michigan
Son, age 21
Kent, Michigan · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Kent-County, Michigan
Son, age 31
Kent-County, Michigan · implied b. ~1909 — 5 household members
| Surname | Thomas |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Grand Rapids City |
| 1935 Residence (County) | Kent |
| Occupation | Chauffeur |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 780 |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Donald Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Emery Thomas (~0.92 confidence) and mother Mabel Thomas (~0.92 confidence) and mother Mary Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Emery Thomas
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mabel Thomas
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Mary Thomas
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Thomas
Son · 1940 · age 31 · b. ~1909 · Michigan
★ You are viewing this record
Sibling
Carl Thomas
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Thomas
Sibling · 1940 · age 29
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 — Kent-County, Michigan
Open full size
1940 US Federal Census — Kent-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01898-00434)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anne Norten | 18 | Daughter in law | — | Michigan |
| 2 | James Cumbo | 24 | Head | Laborer | Kentucky |
| 3 | Vivian (X) Cumbo | 21 | Wife | — | Virginia |
| 4 | Barbara Ann Cumbo | 3 | Daughter | — | Kentucky |
| 5 | Jimmie C. Cumbo | 2 | Daughter | — | Kentucky |
| 6 | Fredrick J. Parish | 45 | Head | Fireman | Michigan |
| 7 | Brenda Parish | 41 | Wife | — | Michigan |
| 8 | Robert Parish | 17 | Son | — | Michigan |
| 9 | William Parish | 11 | Son | — | Michigan |
| 10 | Betty Parish | 10 | Daughter | — | Michigan |
| 11 | Jean Parish | 8 | Daughter | — | Michigan |
| 12 | Monte Holbrook | 32 | Head | Press Operator | Kentucky |
| 13 | Marie (X) Holbrook | 32 | Wife | — | Kentucky |
| 14 | Adalene Holbrook | 15 | Daughter | — | Kentucky |
| 15 | Marvin Holbrook | 13 | Son | — | Kentucky |
| 16 | Alfred Niggle | 62 | Head | Shoe Maker | Michigan |
| 17 | Rose (X) Niggle | 55 | Wife | — | Michigan |
| 18 | Alfred Jr. Niggle | 32 | Son | Inventor | Michigan |
| 19 | Russell Niggle | 30 | Son | Clerk | Michigan |
| 20 | Violet Niggle | 28 | Daughter | Dental Asst | Michigan |
| 21 | Anna Schmidt | 78 | Head | — | Germany |
| 22 | Alfred Winterhalter | 43 | Head | Repair Man | Michigan |
| 23 | Leona (X) Winterhalter | 40 | Wife | — | Michigan |
| 24 | Alice Winterhalter | 7 | Daughter | — | Michigan |
| 25 | Virginia Peltit | 14 | Daughter | — | Michigan |
| 26 | Emery Thomas | 57 | Head | Elevator Op | Michigan |
| 27 | Mary E. Thomas | 54 | Wife | — | Michigan |
| 28 | Donald Thomas THIS PERSON | 31 | Son | Chauffeur | Michigan |
| 29 | Edna Thomas | 29 | Daughter | Pack | Michigan |
| 30 | Carl Thomas | 25 | Son | — | Michigan |
| 31 | Charles (X) Swan | 58 | Head | Asst To Maintenance | Sweden |
| 32 | Helen Swan | 48 | Wife | — | Michigan |
| 33 | Harry Sharkey | 28 | Son | Welder | Michigan |
| 34 | Russell Sharkey | 25 | Son | Furnace Installer | Michigan |
| 35 | Raymond Sharkey | 20 | Son | Punch Press Op | Michigan |
| 36 | Robert Sharkey | 16 | Son | — | Michigan |
| 37 | Joseph Nolan | 61 | Head | School Teacher | Michigan |
| 38 | Lucy (X) Nolan | 59 | Wife | — | Michigan |
| 39 | Margaret Nolan | 30 | Daughter | Stenographer | Michigan |
| 40 | Carlton (X) Durkee | 27 | Head | Mechanic | Michigan |
Pedigree Summary
Donald + 2 siblings
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)