RD
Robert Duncan — 1920 US Census Record
Model Tree available1920 United States Federal Census · Lancaster, South Carolina
Our Model Tree links this Robert Duncan across the 1900, 1910 and 1920 US Censuses in Lancaster, South Carolina (XGBoost, ~Confirmed), with identified parents Robert & Robert — first a son (b.~1897), then head of a 3-person household.
Age 23
b. ~1897
Male
Son
Born: South Carolina
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Lancaster, South Carolina |
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Additional Details | |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Township / Ward | Pleasant Hill Township |
| Est. Birth Year | ~1897 |
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 1920 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Duncan | Son | — | 23 | ~1897 |
| Susan Duncan | Spouse | — | 45 | ~1875 |
| Robert Duncan | Head | — | 48 | ~1872 |
Census Appearances
1900
Lancaster, South …
Son, age 2
Lancaster, South Carolina · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Birth Month | May |
| Birth Year | 1898 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | No |
| Can Write | No |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1910
Lancaster, South …
Son, age 13
Lancaster, South Carolina · implied b. ~1897 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Mulatto |
| Age | 13 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Can Read | No |
| Can Write | No |
| Speaks English | English |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1920
Lancaster, South …
Son, age 23
Lancaster, South Carolina · implied b. ~1897 — 3 household members
| Surname | Duncan |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| 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 Robert Duncan across 3 US Census years (1900, 1910 and 1920) in Lancaster, South Carolina, using XGBoost record linkage. Identified parents: father Robert Duncan (~0.92 confidence) and father Robert Duncan (~0.92 confidence) and mother Luana Duncan (~0.92 confidence) and father Hade Duncan (~0.92 confidence) and mother Joanna Duncan (~0.92 confidence) and mother Susan Duncan (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Duncan
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Robert Duncan
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Luana Duncan
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Hade Duncan
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Joanna Duncan
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Susan Duncan
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Duncan
Son · 1920 · age 23 · b. ~1897 · South Carolina
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Lancaster, South Carolina
Open full size
1920 US Federal Census — Lancaster, South Carolina
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1701unit:0557)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Daisy M | 3 | Daughter | — | South Carolina |
| 52 | David | 1 | Son | — | South Carolina |
| 53 | Lula E | 0 | Daughter | — | South Carolina |
| 54 | Abner F Hinson | 31 | Head | Farmer | South Carolina |
| 55 | Ida Hinson | 27 | Wife | Laborer | South Carolina |
| 56 | L C Hinson | 7 | Son | — | South Carolina |
| 57 | Flossie Hinson | 5 | Daughter | — | South Carolina |
| 58 | Margaret Hinson | 4 | Daughter | — | South Carolina |
| 59 | Charley Blackmon | 40 | Head | Farmer | South Carolina |
| 60 | Rosa A Blackmon | 35 | Wife | Laborer | South Carolina |
| 61 | David Blackmon | 12 | Son | — | South Carolina |
| 62 | Ola Blackmon | 9 | Daughter | — | South Carolina |
| 63 | Samuel W Nixon | 60 | Head | Farmer | South Carolina |
| 64 | Margaret Nixon | 53 | Wife | Laborer | South Carolina |
| 65 | Ulysses W Hinson | 40 | Head | Farmer | South Carolina |
| 66 | Dora M Hinson | 36 | Wife | Laborer | South Carolina |
| 67 | Lona Hinson | 16 | Daughter | Laborer | South Carolina |
| 68 | Chalmer Hinson | 14 | Son | Laborer | South Carolina |
| 69 | Mildred Hinson | 12 | Daughter | — | South Carolina |
| 70 | J W Hinson | 10 | Son | — | South Carolina |
| 71 | Elmer Hinson | 8 | Son | — | South Carolina |
| 72 | Ethel Hinson | 5 | Daughter | — | South Carolina |
| 73 | Ruth Hinson | 3 | Daughter | — | South Carolina |
| 74 | Annie L Hinson | 1 | Daughter | — | South Carolina |
| 75 | Albert Trudy | 45 | Head | Farmer | South Carolina |
| 76 | Harriet Trudy | 41 | Wife | Laborer | South Carolina |
| 77 | Lella Trudy | 22 | Daughter | Laborer | South Carolina |
| 78 | Thompson Trudy | 16 | Son | Laborer | South Carolina |
| 79 | Albert Trudy | 12 | Son | Laborer | South Carolina |
| 80 | Willie Trudy | 10 | Son | Laborer | South Carolina |
| 81 | Abbott Trudy | 11 | Son | Laborer | South Carolina |
| 82 | Phoebe Trudy | 9 | Daughter | — | South Carolina |
| 83 | Lilla Blackmon | 64 | Head | Farmer | South Carolina |
| 84 | Mary L Blackmon | 20 | Daughter | Laborer | South Carolina |
| 85 | Henry Blackmon | 18 | Son | Laborer | South Carolina |
| 86 | Rosa B Blackmon | 16 | Daughter | Laborer | South Carolina |
| 87 | Lilly L Blackmon | 12 | Daughter | Laborer | South Carolina |
| 88 | Willie G Harris | 50 | Head | — | South Carolina |
| 89 | Beula H Harris | 50 | Wife | Farmer | South Carolina |
| 90 | Douglas Harris | 22 | Son | Laborer | South Carolina |
| 91 | Odell B Harris | 12 | Son | — | South Carolina |
| 92 | Robert Duncan | 48 | Head | — | South Carolina |
| 93 | Susan Duncan | 45 | Wife | Farmer | South Carolina |
| 94 | Robert Duncan THIS PERSON | 23 | Son | — | South Carolina |
| 95 | Will Duncan | 36 | Head | Laborer | South Carolina |
| 96 | Minerva Duncan | 38 | Daughter | Farmer | South Carolina |
| 97 | Willie Duncan | 14 | Son | Laborer | South Carolina |
| 98 | Bell Duncan | 12 | Daughter | Laborer | South Carolina |
| 99 | Freddie Duncan | 8 | Son | — | South Carolina |
| 100 | Lilly M Duncan | 5 | Daughter | — | South Carolina |
Pedigree Summary
Robert
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)