HT
Harold Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Gratiot-County, Michigan
Our Model Tree links this Harold Thomas across the 1910, 1920, 1930 and 1940 US Censuses in Gratiot-County, Michigan (XGBoost, ~Confirmed), with identified parents Caleb & Emma — first a head (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Gratiot-County, Michigan |
| Surname | Thomas |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Lafayette Twp |
| 1935 Residence (County) | Gratiot |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farmer |
| Township / Ward | Lafayette Twp |
| Est. Birth Year | ~1901 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Mural Thomas | Son | — | 15 | ~1925 |
| Harold Thomas | Head | — | 39 | ~1901 |
| Ruth Thomas | Daughter | — | 17 | ~1923 |
| Eva Thomas | Spouse | — | 39 | ~1901 |
Census Appearances
1910
Gratiot, Michigan
Son, age 9
Gratiot, Michigan · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1920
Gratiot, Michigan
Son, age 19
Gratiot, Michigan · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Gratiot, Michigan
Head, age 29
Gratiot, Michigan · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 20 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 175 |
| Radio Set | R |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Gratiot-County, Michigan
Head, age 39
Gratiot-County, Michigan · implied b. ~1901 — 4 household members
| Surname | Thomas |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Lafayette Twp |
| 1935 Residence (County) | Gratiot |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Harold Thomas across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Caleb Thomas (~0.92 confidence) and mother Emma Thomas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Caleb Thomas
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Emma Thomas
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Thomas
Head · 1940 · age 39 · b. ~1901 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Gratiot-County, Michigan
Open full size
1940 US Federal Census — Gratiot-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01754-00502)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ira B. Aldrich | 80 | Father-in-law | — | Michigan |
| 2 | Harold Thomas THIS PERSON | 39 | Head | Farmer | Michigan |
| 3 | Eva M. Thomas | 39 | Wife | — | Michigan |
| 4 | Ruth Thomas | 17 | Daughter | — | Michigan |
| 5 | Mural J. Thomas | 15 | Son | — | Michigan |
| 6 | Emma G. Thomas | 74 | Head | — | Michigan |
| 7 | Harold J. Mills | 30 | Head | Farmer | Indiana |
| 8 | Carol E. Mills | 31 | Wife | — | Michigan |
| 9 | Marilyn J. Mills | 7 | Daughter | — | Michigan |
| 10 | Park R. Strouse | 55 | Head | Farmer | Ohio |
| 11 | Sophrona Strouse | 52 | Wife | — | Michigan |
| 12 | Harvey R. Strouse | 53 | Head | Farmer | Colorado |
| 13 | Opal P. Strouse | 52 | Wife | — | Illinois |
| 14 | Doris M. Strouse | 11 | Daughter | — | Michigan |
| 15 | Robert W. Strouse | 7 | Son | — | Michigan |
| 16 | Clarence L. Gawsey | 37 | Head | Farmer | Michigan |
| 17 | Hannah M. Gawsey | 30 | Wife | — | Michigan |
| 18 | Clarence C. Gawsey | 19 | Son | — | Michigan |
| 19 | Donald R. Gawsey | 7 | Son | — | Michigan |
| 20 | Doyle C. Gatenby | 28 | Head | Laborer | Michigan |
| 21 | Leola K. Gatenby | 27 | Wife | — | Michigan |
| 22 | Riley Aldrich | 85 | Head | — | Michigan |
| 23 | Margaret M. Aldrich | 73 | Wife | — | Ohio |
| 24 | Burt Aldrich | 45 | Son | — | Michigan |
| 25 | Arthur J. Aldrich | 43 | Son | Farmer | Michigan |
| 26 | Gordon R. Aldrich | 41 | Head | Farmer | Michigan |
| 27 | Ethel M. Aldrich | 40 | Wife | — | Indiana |
| 28 | Ralph L. Robbins | 14 | Step-son | — | Indiana |
| 29 | Harold Aldrich | 24 | Head | Farmer | Michigan |
| 30 | Ida Aldrich | 24 | Wife | — | Illinois |
| 31 | Irvin Aldrich | 64 | Head | Farmer | Michigan |
| 32 | Vernie Aldrich | 54 | Wife | — | Ohio |
| 33 | Cyrus D. Aldrich | 57 | Head | Farmer | Michigan |
| 34 | Hazel Aldrich | 57 | Wife | — | Michigan |
| 35 | Bud J. Perry | 28 | Head | Laborer | Michigan |
| 36 | Lila L. Perry | 25 | Wife | — | Michigan |
| 37 | Roy W. Perry | 5 | Son | — | Michigan |
| 38 | William Gunneman | 74 | Head | Farmer | Michigan |
| 39 | Jana D. Gunneman | 68 | Wife | — | Michigan |
| 40 | Harry R. Millner | 55 | Head | Farmer | Missouri |
Pedigree Summary
Harold
Gen 1 · 2 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)