WD
William Duncan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this William Duncan across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents Margaret & William — first a head (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Duncan |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Automobile Mechanic |
| Industry | Service Dealer |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 720 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Automobile Mechanic |
| Township / Ward | Detroit |
| Est. Birth Year | ~1910 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Virginia Duncan | Daughter | — | 5 | ~1935 |
| William Duncan | Head | — | 30 | ~1910 |
| Harry Mcintyre | Other | — | 27 | ~1913 |
| Pauline Mcintyre | Spouse | — | 24 | ~1916 |
| Dorothy Duncan | Spouse | — | 24 | ~1916 |
Census Appearances
1920
Wayne, Michigan
Son, age 10
Wayne, Michigan · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1909 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | scotland |
1930
Wayne, Michigan
Son, age 19
Wayne, Michigan · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1911 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Mach. op. |
| Industry | Automobile Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Wayne-County, Michigan
Head, age 30
Wayne-County, Michigan · implied b. ~1910 — 5 household members
| Surname | Duncan |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Detroit |
| 1935 Residence (County) | Wayne |
| Naturalization Status | Naturalized |
| Occupation | Automobile Mechanic |
| Industry | Service Dealer |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 720 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Margaret Duncan (~0.92 confidence) and father William Duncan (~0.92 confidence) and father William Duncan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Duncan
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
William Duncan
b. ~1877
Source father
● Household
· direct · ~0.92
Father
William Duncan
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Duncan
Head · 1940 · age 30 · b. ~1910 · Michigan
★ 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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01857-00293)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hyman Gold | 33 | Head | Building Contractor | Rumania |
| 42 | Fanny Gold | 36 | Wife | — | Rumania |
| 43 | Shirley Gold | 34 | Sister | Owner | Rumania |
| 44 | Calman Eizen | 57 | Head | — | Lithuania |
| 45 | Dorothy Eizen | 29 | Daughter | Teacher | Lithuania |
| 46 | Phillip Eizen | 32 | Son | General Helper | Michigan |
| 47 | Jacqueline Eizen | 19 | Daughter | New Worker | Michigan |
| 48 | Ellen Eizen | 15 | Daughter | — | Michigan |
| 49 | Rubin Eizen | 23 | Son | Salesman | Michigan |
| 50 | Rose Bunstein | 32 | Daughter | — | Lithuania |
| 51 | Joseph Bunstein | 29 | Son-in-law | Watchmaker | Lithuania |
| 52 | Dora Cohen | 52 | Sister-in-law | — | Lithuania |
| 53 | Morris Zeman | 72 | Head | Delivery Man | Russia |
| 54 | Celia Zeman | 46 | Wife | — | Rumania |
| 55 | Esther Zeman | 39 | Daughter | Stenographer | England |
| 56 | David Zeman | 38 | Son | Delivery Man | England |
| 57 | Jenny Rogvoy | 60 | Head | — | Russia |
| 58 | Rose Rogvoy | 27 | Daughter | Social Worker | Russia |
| 59 | Theodore Rogvoy | 30 | Son | Architect | Russia |
| 60 | Ada Cramer | 31 | Head | Saleslady | Michigan |
| 61 | Esther Jacobson | 65 | Mother | — | Poland |
| 62 | Gersa Cramer | 12 | Daughter | — | Michigan |
| 63 | Charlotte Cramer | 10 | Daughter | — | Michigan |
| 64 | Ross Holmes | 68 | Head | Vault Attendant | Michigan |
| 65 | Lilly Holmes | 68 | Wife | — | Michigan |
| 66 | David Holmes | 16 | Nephew | — | Australia |
| 67 | Rubin Perkers | 32 | Head | Proprietor | Michigan |
| 68 | Minnie Perkers | 27 | Wife | — | Michigan |
| 69 | Bruce Perkers | 2 | Son | — | Michigan |
| 70 | Jack Goldberg | 29 | Brother-in-law | Proprietor | Michigan |
| 71 | Albert Goldberg | 23 | Brother-in-law | Proprietor | Michigan |
| 72 | Ida Berkin | 53 | Head | — | Russia |
| 73 | Ann Berkin | 24 | Daughter | Tobacco Salesgirl | Michigan |
| 74 | Alice Berkin | 22 | Daughter | Millinery Salesgirl | Michigan |
| 75 | David Berkin | 23 | Son | Station Attendant | Michigan |
| 76 | William Duncan THIS PERSON | 30 | Head | Automobile Mechanic | Scotland |
| 77 | Dorothy Duncan | 24 | Wife | — | Michigan |
| 78 | Virginia Duncan | 5 | Daughter | — | Michigan |
| 79 | Harry Mcintyre | 27 | Brother-in-law | Meat Salesman | Michigan |
| 80 | Pauline Mcintyre | 24 | Wife | — | Michigan |
Pedigree Summary
William
Gen 1 · 3 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)