JD
James Duncan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Lancaster, South Carolina
Our Model Tree links this James Duncan across the 1930 and 1940 US Censuses in Lancaster, South Carolina (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 9-person household.
Age 14
b. ~1916
Male
Son
Born: South Carolina
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lancaster, South Carolina |
| Surname | Duncan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Gills Creek Township Pt Of |
| Est. Birth Year | ~1916 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Hannah Duncan | Daughter | — | 8 | ~1922 |
| Mary Duncan | Daughter | — | 4 | ~1926 |
| Amelia Duncan | Daughter | — | 1 | ~1929 |
| Phoebe Duncan | Daughter | — | 2 | ~1928 |
| Jessie Duncan | Daughter | — | 6 | ~1924 |
| Wardlaw Duncan | Head | — | 55 | ~1875 |
| Samuel Duncan | Son | — | 10 | ~1920 |
| James Duncan | Son | — | 14 | ~1916 |
| Hattie Duncan | Spouse | — | 50 | ~1880 |
Census Appearances
1930
Lancaster, South …
Son, age 14
Lancaster, South Carolina · implied b. ~1916 — 9 household members
| Surname | Duncan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Lancaster-County, South …
Head, age 24
Lancaster-County, South Carolina · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Jack |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Pleasant Hill Township |
| 1935 Residence (County) | Lancaster |
| Occupation | Truck Driver |
| Industry | W.P.A |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 120 |
| Highest Grade | No 4 |
| 1935 Residence | South Carolina |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Duncan
Son · 1930 · age 14 · b. ~1916 · South Carolina
★ You are viewing this record
Sibling
Amelia Duncan
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hannah Duncan
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Duncan
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phoebe Duncan
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Duncan
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Duncan
Sibling · 1930 · age 4
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
1930 US Federal Census — Lancaster, South Carolina
Open full size
1930 US Federal Census — Lancaster, South Carolina
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2204unit:0359)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jessie T Blackmon | 19 | Daughter | Farm Laborer | South Carolina |
| 2 | Gurdy Lofton | 49 | Head | — | South Carolina |
| 3 | Lewis Montgomery | 32 | Boarder | Farm Laborer | South Carolina |
| 4 | Alexander Pratt | 47 | Head | Farmer | South Carolina |
| 5 | Dancy Pratt | 43 | Wife | — | South Carolina |
| 6 | Mary Pratt | 22 | Daughter | Farm Laborer | South Carolina |
| 7 | Frank Pratt | 18 | Son | Farm Laborer | South Carolina |
| 8 | Tracy Pratt | 16 | Son | Farm Laborer | South Carolina |
| 9 | Pearl Pratt | 11 | Daughter | — | South Carolina |
| 10 | Mary J Pratt | 9 | Daughter | — | South Carolina |
| 11 | Annabell Pratt | 7 | Daughter | — | South Carolina |
| 12 | Lilly V Pratt | 5 | Daughter | — | South Carolina |
| 13 | John Lupere | 38 | Head | Farmer | South Carolina |
| 14 | Lydia Lupere | 25 | Wife | — | South Carolina |
| 15 | Lilly Lupere | 11 | Daughter | — | South Carolina |
| 16 | Adha Lupere | 7 | Daughter | — | South Carolina |
| 17 | John H Lupere | 1 | Son | — | South Carolina |
| 18 | Ed White | 48 | Head | Farmer | South Carolina |
| 19 | Martha White | 45 | Wife | — | South Carolina |
| 20 | Thelma White | 20 | Daughter | Farm Laborer | South Carolina |
| 21 | Leroy White | 18 | Son | Farm Laborer | South Carolina |
| 22 | Iona White | 15 | Son | Farm Laborer | South Carolina |
| 23 | Edna M White | 13 | Daughter | — | South Carolina |
| 24 | Columbus White | 10 | Son | — | South Carolina |
| 25 | Sudie White | 6 | Daughter | — | South Carolina |
| 26 | Bessie White | 5 | Daughter | — | South Carolina |
| 27 | Julius N Bailey | 47 | Head | Farmer | South Carolina |
| 28 | Pauline Bailey | 15 | Daughter | — | South Carolina |
| 29 | Wardlaw Duncan | 55 | Head | Farmer | South Carolina |
| 30 | Hattie Duncan | 50 | Wife | — | South Carolina |
| 31 | James Duncan THIS PERSON | 14 | Son | — | South Carolina |
| 32 | Samuel Duncan | 10 | Son | — | South Carolina |
| 33 | Hannah Duncan | 8 | Daughter | — | South Carolina |
| 34 | Jessie Duncan | 6 | Daughter | — | South Carolina |
| 35 | Mary Duncan | 4 | Daughter | — | South Carolina |
| 36 | Phoebe Duncan | 2 | Daughter | — | South Carolina |
| 37 | Amelia Duncan | 1 | Daughter | — | South Carolina |
| 38 | Andrew Horton | 40 | Head | Farmer | South Carolina |
| 39 | Lilla Horton | 42 | Wife | — | South Carolina |
| 40 | William Horton | 14 | Son | Farm Laborer | South Carolina |
| 41 | Pauline Horton | 12 | Daughter | — | South Carolina |
| 42 | Lynn M Horton | 19 | Son | Farm Laborer | South Carolina |
| 43 | Lula Horton | 17 | Daughter-in-law | Farm Laborer | South Carolina |
| 44 | Daniel Knight | 59 | Head | Farmer | South Carolina |
| 45 | Willie L Knight | 29 | Daughter | School Teacher | South Carolina |
| 46 | Ira Knight | 25 | Son | Farmer | South Carolina |
| 47 | Robert M Knight | 51 | Head | Farmer | South Carolina |
| 48 | Nannie Knight | 21 | Wife | — | South Carolina |
| 49 | Lelona Knight | 11 | Daughter | — | South Carolina |
| 50 | Hazel Knight | 14 | Son | — | South Carolina |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)