RD
Robert Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Barry-County, Missouri
Our Model Tree links this Robert Duncan across the 1910, 1920, 1930 and 1940 US Censuses in Barry-County, Missouri (XGBoost, ~Confirmed), with identified parents Peter & Annie — first a head (b.~1887), then head of a 4-person household.
Age 53
b. ~1887
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Barry-County, Missouri |
| Surname | Duncan |
| Given Name | Robert Bruce |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Barry |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farmer |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Missouri |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Farmer |
| Township / Ward | Mineral Township |
| Est. Birth Year | ~1887 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Duncan | Head | — | 53 | ~1887 |
| William Duncan | Son | — | 8 | ~1932 |
| Thomas Duncan | Son | — | ~1940 | |
| Lilly Duncan | Spouse | — | 49 | ~1891 |
Census Appearances
1910
Barry, Missouri
Son, age 24
Barry, Missouri · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | Home Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1920
Barry, Missouri
Other, age 34
Barry, Missouri · implied b. ~1886 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert B |
| Relationship to Head | brother in law |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Barry, Missouri
Head, age 44
Barry, Missouri · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 24 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farming |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Barry-County, Missouri
Head, age 53
Barry-County, Missouri · implied b. ~1887 — 4 household members
| Surname | Duncan |
| Given Name | Robert Bruce |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Barry |
| Occupation | Farmer |
| Industry | Farmer |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Missouri |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peter Duncan (~0.92 confidence) and mother Annie Duncan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Duncan
b. ~1842
Source father
● Household
· direct · ~0.92
Mother
Annie Duncan
b. ~1856
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Duncan
Head · 1940 · age 53 · b. ~1887 · Missouri
★ 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 — Barry-County, Missouri
Open full size
1940 US Federal Census — Barry-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02083-00343)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bessie Faye Burbridge | 2 | Daughter | — | Missouri |
| 2 | Alvin Arthur Henson | 42 | Head | Farmer | Missouri |
| 3 | Francis Edrie Henson | 32 | Wife | — | Arkansas |
| 4 | Alvin Raymond Henson | 19 | Son | — | Missouri |
| 5 | Loren Virgil Henson | 18 | Son | Laborer | Missouri |
| 6 | Ruby Christian Henson | 16 | Daughter | — | Missouri |
| 7 | Fern Dorothy Henson | 9 | Daughter | — | Missouri |
| 8 | Jewell Marie Henson | 7 | Daughter | — | Missouri |
| 9 | Paul Alvin Henson | 5 | Son | — | Missouri |
| 10 | Dreva Lavon Henson | 2 | Daughter | — | Missouri |
| 11 | Denzil Wayne Henson | 0 | Son | — | Missouri |
| 12 | Robert Bruce Duncan THIS PERSON | 53 | Head | Farmer | Kansas |
| 13 | Lilly Amanda Duncan | 49 | Wife | — | Arkansas |
| 14 | William Robert Duncan | 8 | Son | — | Missouri |
| 15 | Thomas Bruce Duncan | 0 | Son | — | Missouri |
| 16 | Ernest Benjamin Reno | 45 | Head | Farmer | Missouri |
| 17 | Virgie Lucile Reno | 29 | Wife | — | Missouri |
| 18 | Donald Gene Reno | 9 | Son | — | Missouri |
| 19 | Beryl Wayne Mcconnell | 39 | Head | Farmer | Arkansas |
| 20 | Grace Evelyn Mcconnell | 29 | Wife | — | Kansas |
| 21 | Wandalee Mcconnell | 5 | Daughter | — | Missouri |
| 22 | John Christopher Snider | 59 | Head | Farmer | Missouri |
| 23 | Rosie Nell Snider | 58 | Wife | — | Missouri |
| 24 | Chester Christopher Snider | 32 | Son | — | Missouri |
| 25 | Benjamin Franklin Carr | 44 | Brother-in-law | Hired Laborer | Missouri |
| 26 | Glen Paul Stumpff | 42 | Head | Retail Merchant | Missouri |
| 27 | Ruth Vermont Stumpff | 44 | Wife | Housekeeper | Missouri |
| 28 | Molly Hailey | 83 | Mother-in-law | — | Arkansas |
| 29 | Wm. Allene Hereman | 63 | Head | Carpenter | Missouri |
| 30 | Silas Jackson Starr | 61 | Head | — | Missouri |
| 31 | Byron Woodrow Starr | 20 | Son | Truck Driver | Missouri |
| 32 | Paul Edgar Stumpff | 24 | Head | Farmer | Missouri |
| 33 | Vivian Nellie Stumpff | 22 | Wife | Laborer | Missouri |
| 34 | Richard Paul Stumpff | 3 | Son | — | California |
| 35 | Larry Gene Stumpff | 2 | Son | — | California |
| 36 | Martin Keith Stumpff | 1 | Son | — | Missouri |
| 37 | Sigel Nath Snider | 46 | Head | Farmer | Missouri |
| 38 | Elmer Olan Snider | 15 | Son | Comm. Laborer | Missouri |
| 39 | Raymond Kelvin Snider | 15 | Son | Comm. Laborer | Missouri |
| 40 | Lucile Snider | 10 | Daughter | — | Missouri |
Pedigree Summary
Robert
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)