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James Duncan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Monroe-County, Mississippi
Our Model Tree links this James Duncan across the 1920, 1930 and 1940 US Censuses in Monroe-County, Mississippi (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 4-person household.
Age 72
b. ~1868
Male
Head
Born: Mississippi
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Monroe-County, Mississippi |
| Surname | Duncan |
| Given Name | James N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Smithville village |
| 1935 Residence (County) | Monroe |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Township / Ward | Smithville Village |
| Est. Birth Year | ~1868 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Myra Duncan | Daughter | — | 33 | ~1907 |
| James Duncan | Head | — | 72 | ~1868 |
| Anna Griffin | Other | — | 66 | ~1874 |
| Lera Duncan | Spouse | — | 69 | ~1871 |
Census Appearances
1920
Monroe, Mississippi
Head, age 53
Monroe, Mississippi · implied b. ~1867 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | James H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Monroe, Mississippi
Head, age 64
Monroe, Mississippi · implied b. ~1866 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | James M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Age at First Marriage | 24 |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Occupation | Night Watchman |
| Industry | Lumber Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1940
Monroe-County, Mississippi
Head, age 72
Monroe-County, Mississippi · implied b. ~1868 — 4 household members
| Surname | Duncan |
| Given Name | James N. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Mississippi |
| 1935 Residence (City) | Smithville village |
| 1935 Residence (County) | Monroe |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 James Duncan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Duncan
Head · 1940 · age 72 · b. ~1868 · Mississippi
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Monroe-County, Mississippi
Open full size
1940 US Federal Census — Monroe-County, Mississippi
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02050-00122)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dallie Morgan | 64 | Head | — | Mississippi |
| 2 | Bill A. White | 74 | Head | — | Mississippi |
| 3 | James E. Long | 33 | Head | Machinist | Alabama |
| 4 | Jessie M. Long | 34 | Wife | — | Alabama |
| 5 | Geneva M. Long | 15 | Daughter | — | Mississippi |
| 6 | Juanita E. Long | 5 | Daughter | — | Mississippi |
| 7 | James N. Duncan THIS PERSON | 72 | Head | — | Mississippi |
| 8 | Lera J. Duncan | 69 | Wife | — | Mississippi |
| 9 | Myra J. Duncan | 33 | Daughter | — | Mississippi |
| 10 | Anna L. Griffin | 66 | Sister-in-law | — | Mississippi |
| 11 | Troy Patrick | 25 | Head | 40 | Mississippi |
| 12 | Willie L. Patrick | 22 | Wife | — | Mississippi |
| 13 | Starley Patrick | 13 | Son | — | Mississippi |
| 14 | Letha Henly | 22 | Boarder | — | Arkansas |
| 15 | Asa M. Dankefur | 48 | Head | Mill Rite | Mississippi |
| 16 | Ida A. Dankefur | 51 | Wife | — | Texas |
| 17 | Thomas M. Morgan | 27 | Head | Labor | Mississippi |
| 18 | Leoma M. Morgan | 19 | Wife | — | Mississippi |
| 19 | Thomas Jr. Morgan | 1 | Son | — | Mississippi |
| 20 | Johnnie S. Lancaster | 44 | Head | Traveling Salesman | Mississippi |
| 21 | Emma L. Lancaster | 36 | Wife | — | Mississippi |
| 22 | Jessie C. Leech | 21 | Son | Labor | Mississippi |
| 23 | Audrey L. Leech | 20 | Daughter | — | Mississippi |
| 24 | L. Theron Johnson | 26 | Head | Labor | Mississippi |
| 25 | Trellis Johnson | 25 | Wife | — | Mississippi |
| 26 | William A. Lancaster | 64 | Head | Labor | Mississippi |
| 27 | Manervia Lancaster | 66 | Wife | — | Mississippi |
| 28 | Newton Sullivan | 32 | Head | Labor | Mississippi |
| 29 | Mary I. Sullivan | 23 | Wife | — | Kentucky |
| 30 | Mary J. Sullivan | 2 | Daughter | — | Mississippi |
| 31 | Stephen H. Riggan | 28 | Head | Road Patrolman | Mississippi |
| 32 | Grace E. Riggan | 28 | Wife | — | Mississippi |
| 33 | Norman V. Lyle | 51 | Head | Salesman | Mississippi |
| 34 | Ethelyne Lyle | 53 | Wife | Sales Lady | Mississippi |
| 35 | Margaret M. Riggan | 25 | Step-Daughter | Teacher | Mississippi |
| 36 | Jeffie M. Harmon | 29 | Cousin | Teacher | Mississippi |
| 37 | Lance S. Wright | 40 | Head | Traveling Salesman | Mississippi |
| 38 | Lance S. Jr. Wright | 17 | Son | — | Mississippi |
| 39 | Mary E. Wright | 9 | Daughter | — | Mississippi |
| 40 | Dorothy A. Wright | 6 | Daughter | — | Mississippi |
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)