JD
John Douglas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bay-County, Michigan
Our Model Tree links this John Douglas across the 1920, 1930 and 1940 US Censuses in Bay-County, Michigan (XGBoost, ~Confirmed), with identified parents Stewart & Helen — first a son (b.~1901), then head of a 3-person household.
Age 39
b. ~1901
Male
Son
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bay-County, Michigan |
| Surname | Douglas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Bay City |
| 1935 Residence (County) | Bay |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 40 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Bay City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Stewart Douglas | Head | — | 67 | ~1873 |
| John Douglas | Son | — | 39 | ~1901 |
| Helen Douglas | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Bay, Michigan
Son, age 19
Bay, Michigan · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglass |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Scotland |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Clerical work |
| Industry | Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Bay, Michigan
Son, age 28
Bay, Michigan · implied b. ~1902 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Douglas |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Clerk |
| Industry | Iron Steel |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Bay-County, Michigan
Son, age 39
Bay-County, Michigan · implied b. ~1901 — 3 household members
| Surname | Douglas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Bay City |
| 1935 Residence (County) | Bay |
| Naturalization Status | Naturalized |
| Hours Worked | 40 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Douglas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Stewart Douglas (~0.92 confidence) and mother Helen Douglas (~0.92 confidence) and father Stewart Douglas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Stewart Douglas
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Helen Douglas
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
Stewart Douglas
b. ~1879
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Douglas
Son · 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 — Bay-County, Michigan
Open full size
1940 US Federal Census — Bay-County, Michigan
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01727-00161)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis Lehman | 64 | Head | Baggageman | Canada |
| 2 | Millie Lehman | 56 | Wife | — | England |
| 3 | Hannah Lehman | 34 | Daughter | Photo Helper | England |
| 4 | Russell Bell | 24 | Nephew | — | Michigan |
| 5 | Hannah Bell | 21 | Niece | Soda Clerk | Michigan |
| 6 | Stewart Douglas | 67 | Head | Clerk | Scotland |
| 7 | Helen Douglas | 64 | Wife | — | Scotland |
| 8 | John Douglas THIS PERSON | 39 | Son | — | Scotland |
| 9 | Joseph La Fronboise | 56 | Head | Inspector | Mich |
| 10 | Stella La Fronboise | 51 | Wife | — | Mich |
| 11 | Lawrence Walmsley | 29 | Head | Factory Worker | Mich |
| 12 | Irma Walmsley | 27 | Wife | — | Mich |
| 13 | William Mcallister | 80 | Head | — | Penn |
| 14 | Kathrin Mcallister | 74 | Wife | — | Canada Eng |
| 15 | Elizabeth King | 80 | Head | — | Mich |
| 16 | John King | 75 | Brother | — | Canada Fr |
| 17 | Albert Reider | 46 | Head | Woodworker | Mich |
| 18 | Clara R. Reider | 44 | Wife | Saleslady | Mich |
| 19 | William Mclean | 47 | Wife | Factory Worker | Mich |
| 20 | Ada Deno | 68 | Mother | — | Canada Eng |
| 21 | Beatrice M. Ricard | 34 | Head | Factory Worker | Mich |
| 22 | Harris J. Ricard | 15 | Son | — | Mich |
| 23 | Marie Alyce Campbell | 29 | Partner | Traffic Manager | Mich |
| 24 | Edwin R. Fenner | 75 | Head | Foreman | Mich |
| 25 | Marie E. Fenner | 25 | Wife | — | Mich |
| 26 | Barbara Fenner | 1 | Daughter | — | Mich |
| 27 | Alice Fenwick | 42 | Wife | — | Mich |
| 28 | Eva Fenwick | 19 | Daughter | New Worker | Mich |
| 29 | Zola Bristow | 35 | Wife | Bookkeeper | Mich |
| 30 | Ann Peters | 25 | Head | Factory Worker | Mich |
| 31 | James Mcshane | 52 | Head | Factory Worker | Mich |
| 32 | Herbert Dalse | 55 | Head | Carpenter | New York |
| 33 | Lester Williams | 43 | Wife | — | Mich |
| 34 | William Nehls | 68 | Father | Foundry Worker | Mich |
| 35 | William Nehls | 22 | Brother | New Worker | Mich |
| 36 | Gustave Nehls | 20 | Brother | — | Mich |
| 37 | Aurora Nehls | 54 | Wife | — | Mich |
Pedigree Summary
John
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)