JD
John Duncan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this John Duncan across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 8-person household.
Age 58
b. ~1882
Male
Head
Born: Utah
Divorced
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Duncan |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Divorced |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Manager |
| Industry | Wholesale Station |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Manager |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1882 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Joan Duncan | Daughter | — | 9 | ~1931 |
| Madene Duncan | Daughter | — | 15 | ~1925 |
| Ione Duncan | Daughter | — | 30 | ~1910 |
| John Duncan | Head | — | 58 | ~1882 |
| Douglas Duncan | Son | — | 12 | ~1928 |
| Robert Duncan | Son | — | 7 | ~1933 |
| John Duncan | Son | — | 19 | ~1921 |
| Leona Duncan | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Salt Lake, …
Head, age 38
Salt Lake, Utah · implied b. ~1882 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Manager |
| Industry | Lumber Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Head, age 48
Salt Lake, Utah · implied b. ~1882 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 26 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Assistant Manager |
| Industry | Dry Goods Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 2100 |
| Home Value / Rent | R |
| Veteran | R |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 58
Salt-Lake-County, Utah · implied b. ~1882 — 8 household members
| Surname | Duncan |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Divorced |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | Manager |
| Industry | Wholesale Station |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Duncan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Duncan
Head · 1940 · age 58 · b. ~1882 · Utah
★ 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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04223-01012)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Doris A. Sainsbury | 6 | Daughter | — | Utah |
| 2 | Garry G. Sainsbury | 3 | Son | — | Utah |
| 3 | Maurice Jackson | 41 | Head | Salesman | Utah |
| 4 | Helen S. Jackson | 39 | Wife | — | Utah |
| 5 | Darlene Jackson | 19 | Daughter | Saleswoman | Idaho |
| 6 | Bonnie Jackson | 18 | Daughter | Saleswoman | Utah |
| 7 | Maurice Jackson | 13 | Son | — | California |
| 8 | Ray H. Jackson | 9 | Son | — | Utah |
| 9 | John C. Duncan THIS PERSON | 58 | Head | Manager | Utah |
| 10 | Leona R. Duncan | 43 | Wife | — | Utah |
| 11 | Ione Duncan | 30 | Daughter | School Teacher | Utah |
| 12 | John Jr. Duncan | 19 | Son | — | Utah |
| 13 | Madene Duncan | 15 | Daughter | — | Utah |
| 14 | Douglas Duncan | 12 | Son | — | Utah |
| 15 | Joan Duncan | 9 | Daughter | — | Utah |
| 16 | Robert Duncan | 7 | Son | — | Utah |
| 17 | Clinton A. Burt | 56 | Head | Miner | Pennsylvania |
| 18 | Olive W. Burt | 46 | Wife | Editor | Michigan |
| 19 | Eda Forsythe Burt | 17 | Daughter | — | Utah |
| 20 | Beverly Ann Burt | 15 | Daughter | — | Utah |
| 21 | Clinton R. Burt | 8 | Son | — | Utah |
| 22 | Agnes F. Worley | 74 | Mother-in-law | — | Utah |
| 23 | Andrew D. Bryson | 39 | Head | — | Oklahoma |
| 24 | June G. Bryson | 14 | Daughter | — | Utah |
| 25 | Dolores Bryson | 13 | Daughter | — | Utah |
| 26 | Norma Bryson | 10 | Daughter | — | Utah |
| 27 | John Y. Barlow | 66 | Head | Manager | Nevada |
| 28 | Susie S. Barlow | 60 | Wife | — | Utah |
| 29 | Leona Barlow | 13 | Daughter | — | Utah |
| 30 | Alice Barlow | 11 | Daughter | — | Utah |
| 31 | Lavern Barlow | 10 | Daughter | — | Utah |
| 32 | John Barlow | 4 | Son | — | Utah |
| 33 | James A. Linke | 74 | Head | — | Utah |
| 34 | Jeanette V. Linke | 63 | Wife | — | Utah |
| 35 | Arthur H. D. Page | 52 | Head | — | Nebraska |
| 36 | Mary Edith Page | 60 | Wife | — | Utah |
| 37 | Chas. Featherstone | 43 | Head | Tile Contractor | Utah |
| 38 | Almira Featherstone | 42 | Wife | — | Utah |
| 39 | Lois Featherstone | 18 | Daughter | Stenographer | Utah |
| 40 | Lee W. Featherstone | 16 | Son | — | Utah |
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)