RD
Robert Duncan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · West-Feliciana-County, Louisiana
Our Model Tree links this Robert Duncan across the 1930 and 1940 US Censuses in West-Feliciana-County, Louisiana (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 14-person household.
Age 21
b. ~1919
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | West-Feliciana-County, Louisiana |
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Police Jury Ward 10 |
| 1935 Residence (County) | West Feliciana |
| Additional Details | |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 45 |
| Income (1939) | 551 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Laborer |
| Township / Ward | Police Jury Ward 10 |
| 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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Sally Duncan | Daughter | — | 16 | ~1924 |
| M Duncan | Daughter | — | 11 | ~1929 |
| Harry Duncan | Son | — | 13 | ~1927 |
| David Lee | Other | — | 10 | ~1930 |
| Gus Duncan | Son | — | 23 | ~1917 |
| Elnora Duncan | Daughter | — | 15 | ~1925 |
| Robert Duncan | Son | — | 21 | ~1919 |
| Elvin Duncan | Son | — | 11 | ~1929 |
| Jim Duncan | Head | — | 57 | ~1883 |
| Jim Duncan | Son | — | 9 | ~1931 |
| Jesse Duncan | Son | — | 17 | ~1923 |
| Lawrence Duncan | Son | — | 9 | ~1931 |
| Roseaner Duncan | Daughter | — | 3 | ~1937 |
| Laura Duncan | Daughter | — | 8 | ~1932 |
Census Appearances
1930
West Feliciana, …
Son, age 11
West Feliciana, Louisiana · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
West-Feliciana-County, Louisiana
Son, age 21
West-Feliciana-County, Louisiana · implied b. ~1919 — 14 household members
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Police Jury Ward 10 |
| 1935 Residence (County) | West Feliciana |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | NP |
| Hours Worked | 45 |
| Income (1939) | 551 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Robert Duncan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Duncan
Son · 1940 · age 21 · b. ~1919 · Louisiana
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Sibling
Elvin Duncan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
M Duncan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jesse Duncan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Duncan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jim Duncan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roseaner Duncan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gus Duncan
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Duncan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Duncan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sally Duncan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elnora Duncan
Sibling · 1940 · age 15
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 — West-Feliciana-County, Louisiana
Open full size
1940 US Federal Census — West-Feliciana-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01467-00313)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | J. K. Ward | 29 | son | Laborer | Louisiana |
| 2 | Jim Duncan | 57 | head | Farmer | Louisiana |
| 3 | Gus Duncan | 23 | son | Laborer | Louisiana |
| 4 | Robert Duncan THIS PERSON | 21 | son | Laborer | Louisiana |
| 5 | Jesse Duncan | 17 | son | Laborer | Louisiana |
| 6 | Sally Duncan | 16 | daughter | Laborer | Louisiana |
| 7 | Elnora Duncan | 15 | daughter | — | Louisiana |
| 8 | Harry Duncan | 13 | son | — | Louisiana |
| 9 | M. A. Duncan | 11 | daughter | — | Louisiana |
| 10 | Elvin Duncan | 11 | son | — | Louisiana |
| 11 | Jim Jr. Duncan | 9 | son | — | Louisiana |
| 12 | Lawrence Duncan | 9 | son | — | Louisiana |
| 13 | Laura Duncan | 8 | daughter | — | Louisiana |
| 14 | Roseaner Duncan | 3 | daughter | — | Louisiana |
| 15 | David Lee | 10 | grandson | — | Louisiana |
| 16 | Dave Duncan | 40 | head | Farmer | Louisiana |
| 17 | Harriet Duncan | 38 | wife | — | Louisiana |
| 18 | Delfine Duncan | 14 | daughter | — | Louisiana |
| 19 | Nalney Duncan | 12 | daughter | — | Louisiana |
| 20 | Dave Jr. Duncan | 10 | son | — | Louisiana |
| 21 | Henry Duncan | 6 | son | — | Louisiana |
| 22 | Annabella Duncan | 4 | daughter | — | Louisiana |
| 23 | Georgia Duncan | 4 | daughter | — | Louisiana |
| 24 | Rufus Allen | 41 | head | Farmer | Louisiana |
| 25 | Georgia May Allen | 37 | wife | — | Louisiana |
| 26 | Henry Allen | 18 | son | — | Louisiana |
| 27 | Mellie Ann Allen | 16 | daughter | — | Louisiana |
| 28 | Alex Allen | 14 | son | — | Louisiana |
| 29 | Rosa Lee Allen | 13 | daughter | — | Louisiana |
| 30 | Francis Allen | 12 | daughter | — | Louisiana |
| 31 | Lucile Allen | 9 | daughter | — | Louisiana |
| 32 | Martha Allen | 6 | daughter | — | Louisiana |
| 33 | Georgia Allen | 3 | daughter | — | Louisiana |
| 34 | David Allen | 1 | son | — | Louisiana |
| 35 | Willie Allen | 0 | son | — | Louisiana |
| 36 | Jane Johnson | 41 | head | Farmer | Louisiana |
| 37 | Viola Johnson | 34 | wife | — | Louisiana |
| 38 | Jim Johnson | 13 | son | — | Louisiana |
| 39 | Sam Ward | 47 | head | Farmer | Louisiana |
| 40 | Flontine Ward | 36 | wife | — | Louisiana |
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)