JT
John Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this John Thompson across the 1920, 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed), with identified parents Thomas & Elizabeth — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | Thompson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Pontiac City |
| 1935 Residence (County) | Oakland |
| Additional Details | |
| Occupation | Clerk |
| Industry | Tool Gang |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1080 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Clerk |
| Township / Ward | Pontiac City |
| Est. Birth Year | ~1919 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Hazel Thompson | Daughter | — | 24 | ~1916 |
| Thomas Thompson | Head | — | 56 | ~1884 |
| Stuart Thompson | Son | — | 14 | ~1926 |
| John Thompson | Son | — | 21 | ~1919 |
| William Thompson | Son | — | 17 | ~1923 |
| Elizabeth Thompson | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Oakland, Michigan
Son, age 1
Oakland, Michigan · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Mother Tongue | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Oakland, Michigan
Son, age 12
Oakland, Michigan · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Oakland-County, Michigan
Son, age 21
Oakland-County, Michigan · implied b. ~1919 — 6 household members
| Surname | Thompson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Pontiac City |
| 1935 Residence (County) | Oakland |
| Occupation | Clerk |
| Industry | Tool Gang |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1080 |
| Highest Grade | No 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 John Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Thompson (~0.92 confidence) and mother Elizabeth Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Thompson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Thompson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Thompson
Son · 1940 · age 21 · b. ~1919 · Michigan
★ You are viewing this record
Sibling
William Thompson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stuart Thompson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Thompson
Sibling · 1940 · age 24
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 — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01800-01004)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Homer Sides | 32 | Head | Coal Passer | Illinois |
| 2 | Augusta Sides | 30 | Wife | — | Illinois |
| 3 | Russell Rhodes | 14 | Step-son | — | Illinois |
| 4 | Gordon Goadby | 19 | Head | — | Michigan |
| 5 | Mary E. Gale | 35 | Sister | — | Michigan |
| 6 | Minnie Vayap | 59 | Nurse | Nurse | Canada English |
| 7 | Gard Soper | 59 | Niece | — | Michigan |
| 8 | Steve Marschik | 55 | Head | Process Engr | Wisconsin |
| 9 | Carrie Marschik | 55 | Wife | — | Wisconsin |
| 10 | Clarence Luckow | 19 | Nephew | Toolmaker | Wisconsin |
| 11 | Wm D. Harris | 64 | Head | Salesman | Michigan |
| 12 | Lottie E. Harris | 60 | Wife | — | Michigan |
| 13 | Wm J. Walls | 45 | Head | Steam Fitter | Northern Ireland |
| 14 | Elsie Walls | 41 | Wife | — | Canada French |
| 15 | Wm S. Walls | 15 | Son | — | Michigan |
| 16 | Robert Walls | 33 | Brother | Steam Fitter | Northern Ireland |
| 17 | Emil Cottke | 54 | Head | Machine Opr | Michigan |
| 18 | Anna Cottke | 49 | Wife | — | Michigan |
| 19 | Donald Cottke | 18 | Son | — | Michigan |
| 20 | Thomas Thompson | 56 | Head | Line Repairman | Scotland |
| 21 | Elizabeth Thompson | 56 | Wife | — | Scotland |
| 22 | Hazel Thompson | 24 | Daughter | Comptometer Opr | Michigan |
| 23 | John Thompson THIS PERSON | 21 | Son | Clerk | Michigan |
| 24 | William Thompson | 17 | Son | — | Michigan |
| 25 | Stuart Thompson | 14 | Son | — | Michigan |
| 26 | M. M. Pruitt | 71 | Head | — | Michigan |
| 27 | Ruth Ellen Pruitt | 44 | Daughter | Deputy | Michigan |
| 28 | Roy G. Ashwin | 53 | Head | Printer | Canada English |
| 29 | Maude E. Ashwin | 56 | Wife | — | Michigan |
| 30 | Jackson Russell Ashwin | 24 | Son | Attendant | Michigan |
| 31 | Clifford Baer | 36 | Head | Pressman | Pennsylvania |
| 32 | Marie Baer | 33 | Wife | — | Oakland Co |
| 33 | Donley Baer | 16 | Son | — | Ohio |
| 34 | June Baer | 12 | Daughter | — | Ohio |
| 35 | Shirley Baer | 9 | Daughter | — | Alabama |
| 36 | Clay De Jap | 34 | Head | Mechanic | South Carolina |
| 37 | Nora De Jap | 35 | Wife | — | South Carolina |
| 38 | Billy Haynes | 15 | Step-son | — | South Carolina |
| 39 | Gladys Haynes | 14 | Step-daughter | — | South Carolina |
| 40 | Page A. Beach | 66 | Head | — | California |
Related Census Records
Pedigree Summary
John + 3 siblings
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)