WA
William Armstrong — 1940 US Census Record
Model Tree available1940 United States Federal Census · Champaign-County, Illinois
Our Model Tree links this William Armstrong across the 1920, 1930 and 1940 US Censuses in Champaign-County, Illinois (XGBoost, ~Confirmed), with identified parents Joseph & Fannie — first a head (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Champaign-County, Illinois |
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Colfax Twp |
| 1935 Residence (County) | Champaign |
| Additional Details | |
| Occupation | Laborer |
| Industry | U. S. School |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Colfax Twp |
| Est. Birth Year | ~1911 |
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 |
|---|---|---|---|---|
| William Armstrong | Head | — | 29 | ~1911 |
| Joseph Armstrong | Son | — | 5 | ~1935 |
| John Armstrong | Son | — | 7 | ~1933 |
| James Armstrong | Son | — | 2 | ~1938 |
| Genevieve Armstrong | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Champaign, Illinois
Son, age 9
Champaign, Illinois · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Champaign, Illinois
Son, age 19
Champaign, Illinois · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | William J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farm Laborer |
| Industry | Laborer |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Champaign-County, Illinois
Head, age 29
Champaign-County, Illinois · implied b. ~1911 — 5 household members
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Colfax Twp |
| 1935 Residence (County) | Champaign |
| Occupation | Laborer |
| Industry | U. S. School |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 William Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Armstrong (~0.92 confidence) and mother Fannie Armstrong (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Armstrong
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Fannie Armstrong
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Armstrong
Head · 1940 · age 29 · b. ~1911 · Illinois
★ 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 — Champaign-County, Illinois
Open full size
1940 US Federal Census — Champaign-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00766-00930)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Russell Troutman | 35 | Head | Farmer | Illinois |
| 2 | May Troutman | 36 | Wife | House Wife | Illinois |
| 3 | Robert Troutman | 9 | Son | — | Illinois |
| 4 | Evelyn Troutman | 3 | Daughter | — | Illinois |
| 5 | Joseph G. Musser | 56 | Head | Laborer | Illinois |
| 6 | Albert Musser | 60 | Brother | Laborer | Illinois |
| 7 | Henry C. Lemke | 56 | Head | Farmer | Illinois |
| 8 | Daisy Lemke | 57 | Wife | House Wife | Virginia |
| 9 | Hazel Lemke | 17 | Daughter | — | Illinois |
| 10 | Edward Lemke | 15 | Son | — | Illinois |
| 11 | Emaline Brown | 86 | Mth-in-law | — | Virginia |
| 12 | Walter Beauterom|Beauterom | 46 | Head | Farmer | Illinois |
| 13 | Mamie Beauterom|Beauterom | 42 | Wife | — | Illinois |
| 14 | Wanda Beauterom|Beauterom | 12 | Daughter | — | Illinois |
| 15 | William Armstrong THIS PERSON | 29 | Head | Laborer | Illinois |
| 16 | Genevieve Armstrong | 27 | Wife | House Wife | Illinois |
| 17 | John Armstrong | 7 | Son | — | Illinois |
| 18 | Joseph Armstrong | 5 | Son | — | Illinois |
| 19 | James Armstrong | 2 | Son | — | Illinois |
| 20 | Carl Westfall | 23 | Head | Farm Hand | Illinois |
| 21 | Eunice Westfall | 22 | Wife | House Wife | Illinois |
| 22 | Ronald Westfall | 2 | Son | — | Illinois |
| 23 | Howard Westfall | 26 | Head | Farm Hand | Illinois |
| 24 | Marie Westfall | 26 | Wife | House Wife | Illinois |
| 25 | John Westfall | 4 | Son | — | Illinois |
| 26 | Wilmajean Westfall | 2 | Daughter | — | Illinois |
| 27 | Clifford Paul | 24 | Head | Farm Hand | Illinois |
| 28 | Atha Paul | 24 | Wife | House Wife | Illinois |
| 29 | Charles Paul | 2 | Son | — | Illinois |
| 30 | Sandra Paul | 0 | Daughter | — | Illinois |
| 31 | Charles D. Duffin | 79 | Head | Farmer | Illinois |
| 32 | Dorothy Duffin | 57 | Wife | House Wife | Illinois |
| 33 | Shirley Duffin | 5 | Daughter | — | Illinois |
| 34 | Calvin Gresher | 16 | Hired man | Hired Man | Illinois |
| 35 | Della Thorn | 72 | Head | House Wife | Illinois |
| 36 | Carl Beauterom|Beauterom | 42 | Head | Farmer | Illinois |
| 37 | Nellie Beauterom|Beauterom | 42 | Wife | House Wife | Illinois |
| 38 | Henry Thomas | 43 | Head | Farmer | Illinois |
| 39 | Edna Thomas | 42 | Wife | House Wife | Illinois |
| 40 | Lee B. Thomas | 2 | Son | — | Illinois |
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)