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William Swanson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knox-County, Illinois
Our Model Tree links this William Swanson across the 1920, 1930 and 1940 US Censuses in Knox-County, Illinois (XGBoost, ~Confirmed), with identified parents Andrew & Andrew — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Illinois |
| Surname | Swanson |
| Given Name | William M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galesburg Township |
| 1935 Residence (County) | Knox |
| Additional Details | |
| Occupation | Delivery Milk |
| Industry | Dairy Business |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 624 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Delivery Milk |
| Township / Ward | Galesburg Township |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Swanson | Son | — | 23 | ~1917 |
| Adga Swanson | Spouse | — | 60 | ~1880 |
| Courtney Swanson | Other | — | 22 | ~1918 |
| Andrew Swanson | Head | — | 83 | ~1857 |
Census Appearances
1920
Knox, Illinois
Son, age 2
Knox, Illinois · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | william |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Knox, Illinois
Son, age 12
Knox, Illinois · implied b. ~1918
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Swanson |
| Given Name | William M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Knox-County, Illinois
Son, age 23
Knox-County, Illinois · implied b. ~1917 — 4 household members
| Surname | Swanson |
| Given Name | William M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galesburg Township |
| 1935 Residence (County) | Knox |
| Occupation | Delivery Milk |
| Industry | Dairy Business |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 624 |
| Highest Grade | Hs 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 Swanson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Swanson (~0.92 confidence) and father Andrew Swanson (~0.92 confidence) and mother Adga Swanson (~0.92 confidence) and mother Adga Swanson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Swanson
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Andrew Swanson
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Adga Swanson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Adga Swanson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Swanson
Son · 1940 · age 23 · b. ~1917 · 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 — Knox-County, Illinois
Open full size
1940 US Federal Census — Knox-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00826-00992)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jody S Williams | 51 | Head | Auto Parts | Illinois |
| 2 | Lora Williams | 48 | Wife | — | Illinois |
| 3 | Evelyn Williams | 28 | Daughter | Seamstress | Illinois |
| 4 | Mary Williams | 22 | Daughter | — | Illinois |
| 5 | Donald Williams | 17 | Son | Auto Wrecker | Illinois |
| 6 | Andrew J Swanson | 83 | Head | Farmer | Sweden |
| 7 | Adga Swanson | 60 | Wife | — | Sweden |
| 8 | William M Swanson THIS PERSON | 23 | Son | Delivery Milk | Illinois |
| 9 | Courtney Swanson | 22 | Hired Man | Farm Labor | Illinois |
| 10 | Fredrick S Hawkinson | 61 | Head | — | Illinois |
| 11 | William Hawkinson | 62 | Brother | — | Illinois |
| 12 | Elmer E Hawkinson | 59 | Brother | Farm Labor | Illinois |
| 13 | Edgar A Wood | 80 | Head | — | Illinois |
| 14 | Bessie M Hall | 57 | Housekeeper | Housekeeper | Illinois |
| 15 | William R Parmenter | 42 | Head | Laborer | Illinois |
| 16 | Fontiel D Parmenter | 37 | Wife | — | Illinois |
| 17 | Mildred L Parmenter | 16 | Daughter | — | Illinois |
| 18 | Kathleen L Parmenter | 14 | Daughter | — | Illinois |
| 19 | Laura M Parmenter | 10 | Daughter | — | Illinois |
| 20 | Roger Parmenter | 4 | Son | — | Illinois |
| 21 | Avery F Parmenter | 2 | Daughter | — | Illinois |
| 22 | Joseph W Parmenter | 1 | Son | — | Illinois |
| 23 | Arlo J Haynes | 43 | Head | Laborer | Illinois |
| 24 | Margaret Haynes | 54 | Wife | — | Virginia |
| 25 | Harry R Haynes | 17 | Son | — | Illinois |
| 26 | Marvin Mccollough | 23 | Head | Truck Driver | Illinois |
| 27 | Pauline Mccollough | 21 | Wife | — | Iowa |
| 28 | Earl S Clark | 28 | Head | Brick Wheeler | Kansas |
| 29 | Edna Clark | 28 | Wife | — | Illinois |
| 30 | Richard Clark | 5 | Son | — | Illinois |
| 31 | Rochelle Clark | 2 | Daughter | — | Illinois |
| 32 | Marvin Clark | 37 | Head | Laborer | Kansas |
| 33 | Mary Clark | 24 | Wife | — | Illinois |
| 34 | Harvey D Miller | 46 | Head | Farmer | Illinois |
| 35 | George Miller | 69 | Father | — | Illinois |
| 36 | Mary Miller | 65 | Mother | — | Illinois |
| 37 | Floyd E Miller | 45 | Head | Farmer | Illinois |
| 38 | Eva Q Miller | 39 | Wife | — | Illinois |
| 39 | Crawford John Miller | 9 | Daughter | — | Illinois |
| 40 | Milard Peery | 32 | Head | Auto Mechanic | Missouri |
Pedigree Summary
William
Gen 1 · 4 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)