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John Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sunflower-County, Mississippi
Our Model Tree links this John Duncan across the 1920, 1930 and 1940 US Censuses in Sunflower-County, Mississippi (XGBoost, ~Confirmed), with identified parents John & Lee — first a son (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Son
Born: Mississippi
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sunflower-County, Mississippi |
| Surname | Duncan |
| Given Name | John Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Inverness |
| 1935 Residence (County) | Sunflower |
| Additional Details | |
| Occupation | Meat Cutter |
| Industry | Meat Market |
| Class of Worker | NP |
| Hours Worked | 70 |
| Income (1939) | 452 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Meat Cutter |
| Township / Ward | Inverness |
| Est. Birth Year | ~1908 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Eva Cook | Daughter | — | 33 | ~1907 |
| John Duncan | Head | — | 64 | ~1876 |
| Edward Cook | Other | — | 12 | ~1928 |
| John Duncan | Son | — | 32 | ~1908 |
Census Appearances
1920
Sunflower, Mississippi
Son, age 12
Sunflower, Mississippi · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Sunflower, Mississippi
Son, age 22
Sunflower, Mississippi · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | John T. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Mississippi |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Salesman |
| Industry | Gro Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Sunflower-County, Mississippi
Son, age 32
Sunflower-County, Mississippi · implied b. ~1908 — 4 household members
| Surname | Duncan |
| Given Name | John Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Mississippi |
| 1935 Residence (City) | Inverness |
| 1935 Residence (County) | Sunflower |
| Occupation | Meat Cutter |
| Industry | Meat Market |
| Class of Worker | NP |
| Hours Worked | 70 |
| Income (1939) | 452 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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. Identified parents: father John Duncan (~0.92 confidence) and mother Lee Duncan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Duncan
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Lee Duncan
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Duncan
Son · 1940 · age 32 · b. ~1908 · Mississippi
★ You are viewing this record
Sibling
Eva Cook
Sibling · 1940 · age 33
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 — Sunflower-County, Mississippi
Open full size
1940 US Federal Census — Sunflower-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02066-00013)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eddie Woo | 51 | Head | Operator | China |
| 42 | Clew Low | 20 | Cousin | Salesman | China |
| 43 | See Too Yem | 41 | Head | Operator | China |
| 44 | Wing Fay Woo | 37 | Partner | Owner Operator | China |
| 45 | Ming Sam Gee | 39 | Lodger | Owner Operator | China |
| 46 | Ming Gee | 18 | Lodger | Clerk | China |
| 47 | Jack M Montgomery | 44 | Head | Farmer | Louisiana |
| 48 | Mildred Baird Montgomery | 44 | Wife | — | Mississippi |
| 49 | Mary Virginia Montgomery | 19 | Daughter | — | Mississippi |
| 50 | Susan Evans Montgomery | 17 | Daughter | — | Mississippi |
| 51 | Jack M. Jr. Montgomery | 15 | Son | — | Mississippi |
| 52 | Sue Evans Baird | 85 | Mother-in-law | — | Mississippi |
| 53 | Robert A. Milton | 45 | Head | Owner Operator | Mississippi |
| 54 | Ruth Milton | 35 | Wife | — | Mississippi |
| 55 | Ruth Janelle Milton | 12 | Daughter | — | Mississippi |
| 56 | Bettie Ann Milton | 10 | Daughter | — | Mississippi |
| 57 | Willie Lou Milton | 6 | Daughter | — | Mississippi |
| 58 | Roberta Milton | 4 | Daughter | — | Mississippi |
| 59 | W. S. Epting | 68 | Lodger | Salesman | Mississippi |
| 60 | William H. Lovner | 52 | Head | Owner Operator | New York |
| 61 | Tillis Lovner | 51 | Wife | Saleswoman | Missouri |
| 62 | Stanley H. Lovner | 22 | Son | — | Mississippi |
| 63 | Doris A. Lovner | 19 | Daughter | — | Mississippi |
| 64 | Horace Curry | 31 | Head | Barber | Mississippi |
| 65 | Elizabeth Curry | 28 | Wife | Cook | Mississippi |
| 66 | Clifford Sanders Bell | 26 | Head | Dentist | Mississippi |
| 67 | Ruby Belle Bell | 24 | Wife | — | Mississippi |
| 68 | Jimmie Lee Bell | 1 | Son | — | Mississippi |
| 69 | June Sandra Bell | 0 | Daughter | — | Mississippi |
| 70 | James Clay Roe | 36 | Head | Superintendent | Tennessee |
| 71 | Rebecca Roe | 31 | Wife | Bookkeeper | Mississippi |
| 72 | John Thomas Duncan | 64 | Head | Owner Operator | Mississippi |
| 73 | John Thomas Jr. Duncan THIS PERSON | 32 | Son | Meat Cutter | Mississippi |
| 74 | Eva Cook | 33 | Daughter | Postal Clerk | Mississippi |
| 75 | Edward L. Cook | 12 | Grand-son | — | Mississippi |
| 76 | Beatrice Miller | 24 | Head | Cook Servant | Mississippi |
| 77 | O. E. Pete Gazaway | 30 | Head | Salesman | Mississippi |
| 78 | Flady Gazaway | 26 | Wife | — | Mississippi |
| 79 | William Lewis Gazaway | 5 | Son | — | Mississippi |
| 80 | Dwain Tucker | 7 | Step-son | — | Mississippi |
Pedigree Summary
John + 1 sibling
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)