RD
Robert Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dade-County, Missouri
Our Model Tree links this Robert Duncan across the 1920, 1930 and 1940 US Censuses in Dade-County, Missouri (XGBoost, ~Confirmed), with identified parents Steve & Lizzie — first a son (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dade-County, Missouri |
| Surname | Duncan |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Sac |
| 1935 Residence (County) | Dade |
| Additional Details | |
| Occupation | Bar Tender |
| Industry | Pool Hall |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 360 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Bartender |
| Township / Ward | Sac |
| Est. Birth Year | ~1913 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Steve Duncan | Head | — | 56 | ~1884 |
| Robert Duncan | Son | — | 27 | ~1913 |
| Lizzie Duncan | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Dade, Missouri
Son, age 6
Dade, Missouri · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Dade, Missouri
Son, age 17
Dade, Missouri · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Dade-County, Missouri
Son, age 27
Dade-County, Missouri · implied b. ~1913 — 3 household members
| Surname | Duncan |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Sac |
| 1935 Residence (County) | Dade |
| Occupation | Bar Tender |
| Industry | Pool Hall |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 360 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Steve Duncan (~0.92 confidence) and mother Lizzie Duncan (~0.92 confidence) and mother Rozetta Duncan (~0.92 confidence) and mother Lizzie Duncan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Steve Duncan
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Lizzie Duncan
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Rozetta Duncan
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Lizzie Duncan
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Duncan
Son · 1940 · age 27 · b. ~1913 · 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 — Dade-County, Missouri
Open full size
1940 US Federal Census — Dade-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02101-00256)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond Cooper | 16 | Son | — | Missouri |
| 42 | Thomas Cooper | 14 | Son | — | Missouri |
| 43 | Olatis Cooper | 12 | Son | — | Missouri |
| 44 | Ron Call | 38 | Head | Carry Water | Missouri |
| 45 | Allie Call | 33 | Wife | — | Missouri |
| 46 | Ruby Call | 16 | Daughter | — | Missouri |
| 47 | Mayme Call | 15 | Daughter | — | Missouri |
| 48 | Mary Call | 12 | Daughter | — | Missouri |
| 49 | Victor Baldwin | 39 | Head | Farmer | Missouri |
| 50 | Jewell Baldwin | 40 | Wife | — | Missouri |
| 51 | Reon Baldwin | 12 | Son | — | Missouri |
| 52 | Shirley Dean Baldwin | 2 | Daughter | — | Missouri |
| 53 | Shelba Jean Baldwin | 2 | Daughter | — | Missouri |
| 54 | Henry Culver | 38 | Head | Common Labor | Missouri |
| 55 | Velma Culver | 34 | Wife | — | Missouri |
| 56 | Virginia Culver | 14 | Daughter | — | Missouri |
| 57 | Loretta Culver | 7 | Daughter | — | Missouri |
| 58 | Lee Scroggins | 28 | Head | Teacher | Missouri |
| 59 | Helen Scroggins | 21 | Wife | — | Missouri |
| 60 | Earnest Montgomery | 49 | Head | Farmer | Missouri |
| 61 | Ora Montgomery | 40 | Wife | Manager | Missouri |
| 62 | Dora Montgomery | 53 | Sister | — | Missouri |
| 63 | Steve Duncan | 56 | Head | Farmer | Missouri |
| 64 | Lizzie Duncan | 43 | Wife | Bar Tender | Missouri |
| 65 | Robert A. Duncan THIS PERSON | 27 | Son | Bar Tender | Missouri |
| 66 | Joel T. Glenn | 70 | Head | Farmer | Missouri |
| 67 | Florence Glenn | 70 | Wife | — | Missouri |
| 68 | Vernon Jenning | 44 | Head | Farmer | Missouri |
| 69 | Era Jenning | 38 | Wife | — | Missouri |
| 70 | Mollie Jenning | 67 | Head | — | Missouri |
| 71 | George Dehart | 53 | Head | Farmer | Missouri |
| 72 | Lula Dehart | 43 | Wife | — | Missouri |
| 73 | Hazel Dehart | 23 | Daughter | Telephone Operator | Missouri |
| 74 | A. J. Dehart | 21 | Son | Waiter | Missouri |
| 75 | Harold Dehart | 16 | Son | — | Missouri |
| 76 | Betty Dehart | 9 | Daughter | — | Missouri |
| 77 | Joe Dehart | 8 | Son | — | Missouri |
| 78 | Geo H. Akins | 45 | Head | Laborer | Missouri |
| 79 | Bessie Akins | 48 | Wife | — | Illinois |
| 80 | Edgar Duncan | 37 | Head | Farmer | Missouri |
Pedigree Summary
Robert
Gen 1 · 4 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)