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George Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Indian-River-County, Florida
Our Model Tree links this George Duncan across the 1920, 1930 and 1940 US Censuses in Indian-River-County, Florida (XGBoost, ~Confirmed), with identified parents Walter & Alice — first a son (b.~1901), then head of a 6-person household.
Age 39
b. ~1901
Male
Son
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Indian-River-County, Florida |
| Surname | Duncan |
| Given Name | George L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Vero Beach City |
| 1935 Residence (County) | Indian River |
| Additional Details | |
| Occupation | Iceman |
| Industry | City Ice Plant |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | Hs 4 |
| 1935 Residence | Florida |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Iceman |
| Township / Ward | Vero Beach City |
| Est. Birth Year | ~1901 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to George | Age | Birth yr |
|---|---|---|---|---|
| Alice Duncan | Other | — | 25 | ~1915 |
| Alice Duncan | Spouse | — | 59 | ~1881 |
| Melvin Williams | Head | — | 27 | ~1913 |
| Shirley Williams | Daughter | — | 1 | ~1939 |
| Marie Williams | Spouse | — | 19 | ~1921 |
| George Duncan | Son | — | 39 | ~1901 |
Census Appearances
1920
St Lucie, …
Son, age 19
St Lucie, Florida · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | Well Driller |
| Industry | Artesian |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1930
Indian River, …
Son, age 29
Indian River, Florida · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | George I. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Oklahoma |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Occupation | Well Driller |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Indian-River-County, Florida
Son, age 39
Indian-River-County, Florida · implied b. ~1901 — 6 household members
| Surname | Duncan |
| Given Name | George L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Vero Beach City |
| 1935 Residence (County) | Indian River |
| Occupation | Iceman |
| Industry | City Ice Plant |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | Hs 4 |
| 1935 Residence | Florida |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 George Duncan across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Walter Duncan (~0.92 confidence) and mother Alice Duncan (~0.92 confidence) and mother Lula Duncan (~0.92 confidence) and father Walter Duncan (~0.92 confidence) and father Melvin Williams (~0.50 confidence) and mother Marie Williams (~0.50 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.78
Father
Walter Duncan
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Alice Duncan
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Lula Duncan
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
Walter Duncan
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Melvin Williams
b. ~1913
Source father
● Household
· direct · ~0.5
Mother
Marie Williams
b. ~1921
Source mother
● Household
· direct · ~0.5
This person
Anchor record
George Duncan
Son · 1940 · age 39 · b. ~1901 · Florida
★ You are viewing this record
Sibling
Shirley Williams
Sibling · 1940 · age 1
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
1940 US Federal Census — Indian-River-County, Florida
Open full size
1940 US Federal Census — Indian-River-County, Florida
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-00592-00551)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Norman W. Hensick | 28 | Head | Contractor | Missouri |
| 42 | Lorene Hensick | 34 | Wife | — | Kansas |
| 43 | Norman W. Hensick | 3 | Son | — | Florida |
| 44 | Michael T. Hensick | 0 | Son | — | Florida |
| 45 | John Schumann | 42 | Head | Postmaster | Indiana |
| 46 | Ruth D. Schumann | 42 | Wife | — | Indiana |
| 47 | John Schumann | 8 | Son | — | Florida |
| 48 | Ellen Carlswath | 20 | Servant | Maid | Florida |
| 49 | Robert J. Young | 73 | Head | Owner | Illinois |
| 50 | Marie K. Young | 70 | Wife | — | Illinois |
| 51 | Robert F. Mceachern | 47 | Head | Proprietor | Florida |
| 52 | Daisy D. Mceachern | 40 | Wife | — | Mississippi |
| 53 | Pearl Mceachern | 24 | Niece | — | Mississippi |
| 55 | Robert Daly | 30 | Head | Proprietor | Nebraska |
| 56 | Mary L. Daly | 31 | Wife | — | Indiana |
| 57 | Marjorie Ray | 38 | Head | — | Maine |
| 58 | Phoebe Ray | 5 | Daughter | — | New York |
| 59 | Stephanie Ray | 4 | Daughter | — | New York |
| 61 | Charles A. Mitchell | 39 | Head | Lawyer | Missouri |
| 62 | Della J. Mitchell | 35 | Wife | — | Missouri |
| 63 | John Charles Mitchell | 7 | Son | — | Florida |
| 64 | William F. Mitchell | 4 | Son | — | Florida |
| 65 | Gertrude Gard | 19 | Servant | Maid | Florida |
| 67 | Edward Elliott | 64 | Head | Overseer | Missouri |
| 68 | Mary D. Elliott | 63 | Wife | — | Kansas |
| 69 | Melvin Williams | 27 | Head | Waiter | Indiana |
| 70 | Marie Williams | 19 | Wife | — | Florida |
| 71 | Shirley Ann Williams | 1 | Daughter | — | Florida |
| 73 | Alice Duncan | 59 | Wife | — | Texas |
| 74 | George L. Duncan THIS PERSON | 39 | Son | Iceman | Oklahoma |
| 75 | Alice Duncan | 25 | Daughter-in-law | Library Assistant | Florida |
| 76 | Ester M. Buttschan | 55 | Head | — | Iowa |
| 77 | Fraser Hayes Buttschan | 79 | Brother | — | Kentucky |
| 78 | Sarah Frazer | 76 | Head | — | England |
| 79 | Janet Halcrow | 66 | Daughter | — | Canada |
| 80 | Edward P. Poole | 53 | Head | Salesman | Illinois |
Pedigree Summary
George + 1 sibling
Gen 1 · 6 parents
~0.78
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)