JD
John Duncan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Lewis, Washington
Our Model Tree links this John Duncan across the 1900, 1910 and 1920 US Censuses in Lewis, Washington (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 3-person household.
Age 45
b. ~1875
Male
Head
Born: Illinois
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Lewis, Washington |
| Surname | Duncan |
| Given Name | John G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Adna Precinct |
| Est. Birth Year | ~1875 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Duncan | Head | — | 45 | ~1875 |
| Edward Duncan | Son | — | 6 | ~1914 |
| Harold Duncan | Son | — | 18 | ~1902 |
Census Appearances
1900
Lewis, Washington
Head, age 28
Lewis, Washington · implied b. ~1872 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | Jun |
| Birth Year | 1872 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Occupation | Farmer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Lewis, Washington
Head, age 38
Lewis, Washington · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | John T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 8 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Eng. English |
| Occupation | Farmer |
| Industry | General farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Lewis, Washington
Head, age 45
Lewis, Washington · implied b. ~1875 — 3 household members
| Surname | Duncan |
| Given Name | John G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 John Duncan across 3 US Census years (1900, 1910 and 1920) in Lewis, Washington, using XGBoost record linkage.
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This person
Anchor record
John Duncan
Head · 1920 · age 45 · b. ~1875 · Washington
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Lewis, Washington
Open full size
1920 US Federal Census — Lewis, Washington
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1933unit:0008)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joel Gray | 66 | Head | — | Massachusetts |
| 2 | William Gray | 64 | Brother | — | Illinois |
| 3 | Ben S Brazier | 45 | Head | Farmer | Ohio |
| 4 | Mollie Brazier | 46 | Wife | — | Ohio |
| 5 | Ralph Brazier | 21 | Son | Laborer | Ohio |
| 6 | Carroll Cardwell | 38 | Head | Farmer | Oregon |
| 7 | Hope V Cardwell | 33 | Wife | — | Oregon |
| 8 | Laverne Cardwell | 13 | Daughter | — | Oregon |
| 9 | Elizabeth Cardwell | 11 | Daughter | — | Washington |
| 10 | Reuben Kaechele | 23 | Head | Farmer | Washington |
| 11 | Bessie Kaechele | 24 | Wife | — | Missouri |
| 12 | Dalton Kaechele | 19 | Brother | — | Washington |
| 13 | John G Duncan THIS PERSON | 45 | Head | Farmer | Illinois |
| 14 | Harold G Duncan | 18 | Son | — | Washington |
| 15 | Edward L Duncan | 6 | Son | — | Washington |
| 16 | Charles H Brown | 36 | Head | Mechanic | Minnesota |
| 17 | Nora E Brown | 31 | Wife | — | Maine |
| 18 | Donald W Brown | 10 | Son | — | Minnesota |
| 19 | Luther Cunningham | 33 | Head | Farmer | Missouri |
| 20 | Rachael Cunningham | 67 | Mother | — | Tennessee |
| 21 | Maude Cunningham | 29 | Sister | — | Missouri |
| 22 | John Cunningham | 11 | Nephew | — | Washington |
| 23 | Lewis Roberts | 32 | Head | Farmer | Iowa |
| 24 | Grace Roberts | 22 | Wife | — | Idaho |
| 25 | Sylvester Dunham | 67 | Head | Constable | New York |
| 26 | Dora Dunham | 54 | Wife | — | Missouri |
| 27 | Lottie O Dunham | 14 | Daughter | — | Washington |
| 28 | Siebert Ramadell | 37 | Head | Minister | Oregon |
| 29 | Myrtle Ramadell | 25 | Wife | — | Oregon |
| 30 | Myrtle R Ramadell | 3 | Daughter | — | Oregon |
| 31 | Stilton Clinton | 46 | Head | Farmer | Kentucky |
| 32 | Velva Clinton | 35 | Wife | — | Iowa |
| 33 | Guy Clinton | 17 | Son | Asst Postmaster | Washington |
| 34 | Thomas Fishback | 30 | Head | Farmer | Minnesota |
| 35 | Frances Fishback | 4 | Daughter | — | Ohio |
| 36 | Pearl Odell | 30 | Head | Servant | S. Dakota |
| 37 | Lawrence Odell | 12 | Son | — | Washington |
| 38 | Henry H Gramm | 62 | Head | — | Germany |
| 39 | Gretta E Gramm | 48 | Wife | — | Germany |
| 40 | Henry E Gramm | 11 | Son | — | Washington |
| 41 | Leland Gramm | 10 | Son | — | Washington |
| 42 | Willie H Gramm | 8 | Son | — | Washington |
| 43 | Joseph Lischka | 32 | Head | Farmer | Bohemia |
| 44 | Edward Gueri | 41 | Head | Farmer | Switzerland |
| 45 | George P Blanchard | 36 | Head | Farmer | Washington |
| 46 | Bella L Blanchard | 39 | Wife | — | Iowa |
| 47 | Lona L Blanchard | 7 | Daughter | — | Washington |
| 48 | George P Blanchard | 5 | Son | — | Washington |
| 49 | Robert Boylan | 37 | Head | Laborer | Kansas |
| 50 | Nellie Boylan | 26 | Wife | — | England |
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)