JW
James Williamson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Vermilion-County, Illinois
Our Model Tree links this James Williamson across the 1920, 1930 and 1940 US Censuses in Vermilion-County, Illinois (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a son (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Vermilion-County, Illinois |
| Surname | Williamson |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville |
| 1935 Residence (County) | Vermilion |
| Additional Details | |
| Hours Worked | 6 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Danville |
| Est. Birth Year | ~1914 |
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 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Carl Williamson | Head | — | 54 | ~1886 |
| James Williamson | Son | — | 26 | ~1914 |
| Marion Williamson | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Vermilion, Illinois
Son, age 5
Vermilion, Illinois · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Vermilion, Illinois
Son, age 16
Vermilion, Illinois · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Vermilion-County, Illinois
Son, age 26
Vermilion-County, Illinois · implied b. ~1914 — 3 household members
| Surname | Williamson |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Danville |
| 1935 Residence (County) | Vermilion |
| Hours Worked | 6 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| 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 James Williamson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Williamson (~0.92 confidence) and father Carl Williamson (~0.92 confidence) and father E Williamson (~0.92 confidence) and mother Marie Williamson (~0.92 confidence) and mother Marie Williamson (~0.92 confidence) and mother Marion Williamson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Williamson
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Carl Williamson
b. ~1886
Source father
● Household
· direct · ~0.92
Father
E Williamson
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Marie Williamson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Marie Williamson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Marion Williamson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Williamson
Son · 1940 · age 26 · b. ~1914 · 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 — Vermilion-County, Illinois
Open full size
1940 US Federal Census — Vermilion-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00898-00138)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen (X) Howell | 28 | Head | Stenographer | Illinois |
| 2 | William Harbaugh | 50 | Head | Traveling Salesman | Iowa |
| 3 | Helen Harbaugh | 48 | Wife | — | Iowa |
| 4 | Leslie J. Davis | 34 | Head | Printer | Illinois |
| 5 | Irene M. (X) Davis | 34 | Wife | — | Illinois |
| 6 | Richard Hubbard | 31 | Head | Clerk | Kansas |
| 7 | Margaret Hubbard | 29 | Wife | — | Kansas |
| 8 | Kenneth Snow | 31 | Head | General Agent | Illinois |
| 9 | Lois (X) Snow | 29 | Wife | — | Illinois |
| 10 | Carl S. Williamson | 54 | Head | Physician | Illinois |
| 11 | Marion Williamson | 50 | Wife | Receptionist | Illinois |
| 12 | James H. Williamson THIS PERSON | 26 | Son | — | Illinois |
| 13 | Sela (X) Goff | 60 | Head | — | Illinois |
| 14 | Helen M. (X) Goff | 26 | Daughter | School Teacher | Illinois |
| 15 | Hubert H. Goff | 35 | Son | Attendant | Illinois |
| 16 | Verke J. Ridley | 32 | Head | Salesman | Pennsylvania |
| 17 | Pearl (X) Ridley | 32 | Wife | Teacher | Illinois |
| 18 | Howard Arant | 20 | Lodger | Salesman | Illinois |
| 19 | Daniel H. Miller | 61 | Head | County Clerk | Pennsylvania |
| 20 | Janet M. (X) Miller | 57 | Wife | — | Illinois |
| 21 | Clinton (X) Davis | 77 | Head | — | Illinois |
| 22 | Marvin S. (X) Conn | 24 | Head | Radio Announcer | Illinois |
| 23 | Bernice Conn | 20 | Wife | — | Missouri |
| 24 | Harlan (X) Shinn | 40 | Head | Concrete Finisher | Illinois |
| 25 | M. R. Shinn | 45 | Wife | Caretaker | Illinois |
| 26 | Nora Johnson | 55 | Head | — | Illinois |
| 27 | Oley (X) Johnson | 33 | Son | Bartender | Illinois |
| 28 | Allen Mcarthur | 65 | Head | Fireman | Illinois |
| 29 | Lelia Mcarthur | 56 | Wife | — | Illinois |
| 30 | Nellie Abbott | 47 | Head | Cook | Missouri |
| 31 | Mildred (X) Abbott | 21 | Daughter | — | Illinois |
| 32 | Ernest Abbott | 17 | Son | — | Illinois |
| 33 | Mary Bathlum | 23 | Head | Presser | Indiana |
| 34 | Grace (X) Bathlum | 21 | Room-mate | Checker | Kentucky |
| 35 | Harry Hayes | 18 | Head | Pin-Setter | Illinois |
| 36 | Helen (X) Hayes | 17 | Wife | Office Girl | Illinois |
| 37 | Harlan Bower | 24 | Head | Tinner | Illinois |
| 38 | Helene (X) Bower | 23 | Wife | Nurse R.N. | Illinois |
| 39 | Angelo (X) Battison | 48 | Head | Miner | Italy |
| 40 | Charles (X) Cramer | 70 | Head | Housekeeper | Wisconsin |
Pedigree Summary
James
Gen 1 · 6 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)