WD
William Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Chenango-County, New York
Our Model Tree links this William Duncan across the 1910, 1920, 1930 and 1940 US Censuses in Chenango-County, New York (XGBoost, ~Confirmed), with identified parents Solomon & Helen — first a head (b.~1889), then head of a 9-person household.
Age 51
b. ~1889
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Chenango-County, New York |
| Surname | Duncan |
| Given Name | William J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Norwich City |
| 1935 Residence (County) | Chenango |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 44 |
| Income (1939) | 450 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Carpenter |
| Township / Ward | Norwich City |
| Est. Birth Year | ~1889 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Helen Duncan | Daughter | — | 13 | ~1927 |
| William Duncan | Head | — | 51 | ~1889 |
| John Sullivan | Other | — | 74 | ~1866 |
| Ethel Eilen | Other | — | 49 | ~1891 |
| John Duncan | Son | — | 20 | ~1920 |
| Thomas Duncan | Son | — | 11 | ~1929 |
| George Duncan | Son | — | 17 | ~1923 |
| William Duncan | Son | — | 22 | ~1918 |
| Mary Duncan | Spouse | — | 50 | ~1890 |
Census Appearances
1910
Chenango, New …
Son, age 22
Chenango, New York · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | New York |
| Occupation | Carpenter |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Chenango, New …
Head, age 32
Chenango, New York · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | William J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | New York |
| Occupation | Carpenter |
| Industry | Contractor |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Year of Naturalization | R |
| Birthplace (normalized) | wisconsin |
1930
Chenango, New …
Head, age 41
Chenango, New York · implied b. ~1889 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | William J |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Age at First Marriage | 26 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | New York |
| Occupation | Carpenter |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3800 |
| Radio Set | R |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Chenango-County, New …
Head, age 51
Chenango-County, New York · implied b. ~1889 — 9 household members
| Surname | Duncan |
| Given Name | William J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Norwich City |
| 1935 Residence (County) | Chenango |
| Occupation | Carpenter |
| Industry | Own Business |
| Class of Worker | OA |
| Hours Worked | 44 |
| Income (1939) | 450 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 William Duncan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Solomon Duncan (~0.92 confidence) and mother Helen Duncan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Solomon Duncan
b. ~1845
Source father
● Household
· direct · ~0.92
Mother
Helen Duncan
b. ~1857
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Duncan
Head · 1940 · age 51 · b. ~1889 · New York
★ 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 — Chenango-County, New York
Open full size
1940 US Federal Census — Chenango-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02515-00503)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Foster | 33 | Head | Bank Teller | New York |
| 2 | Hazel Foster | 22 | Wife | — | New York |
| 3 | Albert Jr Foster | 11 | Son | — | New York |
| 4 | Robert Foster | 8 | Son | — | New York |
| 5 | Charles Doherty | 47 | Head | — | Connecticut |
| 6 | Uretta Doherty | 30 | Wife | — | Connecticut |
| 7 | Doris Doherty | 9 | Daughter | — | Connecticut |
| 8 | Charles Jr Doherty | 8 | Son | — | Connecticut |
| 9 | M. Deverne Aldrich | 68 | Head | — | New York |
| 10 | Stella G Aldrich | 71 | Wife | — | New York |
| 11 | William V Smith | 52 | Head | Railroad | New York |
| 12 | Estella Smith | 49 | Wife | — | Pennsylvania |
| 13 | William Jr Smith | 24 | Son | Truck Driver | New York |
| 14 | Betty Evans | 14 | Sister-in-law | — | Pennsylvania |
| 15 | Harold Hall | 31 | Head | Carpenter | New York |
| 16 | Beatrice Hall | 32 | Wife | — | New York |
| 17 | Joan E Hall | 8 | Daughter | — | New York |
| 18 | David Hall | 4 | Son | — | New York |
| 19 | John R Hall | 3 | Son | — | New York |
| 20 | Catherine Shug | 70 | Mother-in-law | — | Wales |
| 21 | William J Duncan THIS PERSON | 51 | Head | Carpenter | Wisconsin |
| 22 | Mary M Duncan | 50 | Wife | — | Ireland |
| 23 | William C Duncan | 22 | Son | — | New York |
| 24 | John R Duncan | 20 | Son | — | New York |
| 25 | George Duncan | 17 | Son | — | New York |
| 26 | Helen R Duncan | 13 | Daughter | — | New York |
| 27 | Thomas Duncan | 11 | Son | — | New York |
| 28 | John Sullivan | 74 | Father-in-law | — | Ireland |
| 29 | Ethel Eilen | 49 | Lodger | — | New York |
| 30 | Walter Harrington | 49 | Head | Meat Cutter | New York |
| 31 | Amy Harrington | 44 | Wife | — | New York |
| 32 | Minnie Harrington | 23 | Daughter | Clerk | New York |
| 33 | Mary Harrington | 23 | Daughter | — | New York |
| 34 | Jean Harrington | 15 | Daughter | — | New York |
| 35 | Arthur Abraham | 42 | Head | Carpenter | Pennsylvania |
| 36 | Louise Abraham | 43 | Wife | Clerk | Pennsylvania |
| 37 | Janet Abraham | 17 | Daughter | — | Pennsylvania |
| 38 | Sheldon Abraham | 15 | Son | — | Pennsylvania |
| 39 | Libbie Briggs | 64 | Head | — | New York |
| 40 | Theodore Briggs | 34 | Son | Laborer | New York |
Pedigree Summary
William
Gen 1 · 2 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)