JT
John Thomson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this John Thomson across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents Donald & Thomson — 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 | Wayne-County, Michigan |
| Surname | Thomson |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Helper |
| Industry | Auto Factory |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 496 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Helper |
| Township / Ward | Detroit 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 |
|---|---|---|---|---|
| John Thomson | Son | — | 21 | ~1919 |
| Christina Thomson | Spouse | — | 51 | ~1889 |
| Walter Thomson | Son | — | 14 | ~1926 |
| William Thomson | Son | — | 17 | ~1923 |
| Donald Thomson | Head | — | 52 | ~1888 |
| Donald Thomson | Son | — | 23 | ~1917 |
Census Appearances
1920
Wayne, Michigan
Son, age 1
Wayne, Michigan · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomson |
| 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 |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Son, age 11
Wayne, Michigan · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomson |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Son, age 21
Wayne-County, Michigan · implied b. ~1919 — 6 household members
| Surname | Thomson |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | Helper |
| Industry | Auto Factory |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 496 |
| Highest Grade | Hs 3 |
| 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 Thomson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Donald Thomson (~0.92 confidence) and father Thomson 251 (~0.92 confidence) and mother Christine Thomson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Donald Thomson
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Thomson 251
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Christine Thomson
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Thomson
Son · 1940 · age 21 · b. ~1919 · Michigan
★ You are viewing this record
Sibling
Walter Thomson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Thomson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Thomson
Sibling · 1940 · age 17
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01889-00329)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Salvatore Cortil | 9 | Son | — | Michigan |
| 2 | Ronald Cortil | 5 | Son | — | Michigan |
| 3 | Dominick Arceri | 39 | Cousin | Laborer | Italy |
| 4 | George Gregory | 53 | Head | Contractor | Kansas |
| 5 | Helen Gregory | 39 | Wife | Bookkeeper | Iowa |
| 6 | Irving Brimmer | 38 | Head | Estimator | Rhode Island |
| 7 | Irene Brimmer | 37 | Wife | — | Massachusetts |
| 8 | Irving Jr. Brimmer | 9 | Son | — | Michigan |
| 9 | Robert Harvey | 47 | Head | Machine Dept Foreman | North Carolina |
| 10 | Essie Harvey | 40 | Wife | — | North Carolina |
| 11 | Robert Jr. Harvey | 15 | Son | — | Michigan |
| 12 | Doris Harvey | 14 | Daughter | — | Michigan |
| 13 | Betty Harvey | 11 | Daughter | — | Michigan |
| 14 | Joyce Harvey | 5 | Daughter | — | Michigan |
| 15 | Joseph Connelly | 39 | Head | Gen. Foreman | Canada-English |
| 16 | Muriel Connelly | 35 | Wife | — | South Dakota |
| 17 | Dorothy Connelly | 14 | Daughter | — | Michigan |
| 18 | Frank G. Nagelvoort | 29 | Head | Salesman | Michigan |
| 19 | Dorothy Nagelvoort | 21 | Wife | Saleswoman | Illinois |
| 20 | Donald Thomson | 52 | Head | Diner Operator | Scotland |
| 21 | Christina Thomson | 51 | Wife | — | Scotland |
| 22 | Donald A. Thomson | 23 | Son | Welder | Michigan |
| 23 | John C. Thomson THIS PERSON | 21 | Son | Helper | Michigan |
| 24 | William A. Thomson | 17 | Son | — | Michigan |
| 25 | Walter Thomson | 14 | Son | — | Michigan |
| 26 | George Babcock | 41 | Head | History Teacher | Illinois |
| 27 | Onleta Babcock | 39 | Wife | Stenographer | Illinois |
| 28 | George Jr. Babcock | 8 | Son | — | Ohio |
| 29 | Lettie Porter | 63 | Mother-in-law | — | Ohio |
| 30 | William Greenaway | 42 | Head | Conductor | Michigan |
| 31 | Clara E. Greenaway | 44 | Wife | — | Michigan |
| 32 | Robert Greenaway | 19 | Son | General Office | Michigan |
| 33 | Helen Greenaway | 17 | Daughter | New Worker | Michigan |
| 34 | Harold Yapp | 50 | Head | Chemist | Michigan |
| 35 | Hazel Yapp | 50 | Wife | — | Michigan |
| 36 | Richard Yapp | 18 | Son | — | New Jersey |
| 37 | James Yapp | 14 | Son | — | Michigan |
| 38 | Ella Yapp | 85 | Mother | — | Michigan |
| 39 | Arthur Mcmaster | 36 | Head | Inspector | Canada-English |
| 40 | Ruth Mcmaster | 35 | Wife | — | Canada-English |
Pedigree Summary
John + 3 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)