WT
William Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clay-County, Kansas
Our Model Tree links this William Thomas across the 1910, 1920, 1930 and 1940 US Censuses in Clay-County, Kansas (XGBoost, ~Confirmed), with identified parents Bradley & William — first a head (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clay-County, Kansas |
| Surname | Thomas |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Hayes Township |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Farmer |
| Township / Ward | Hayes Township |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Rose Thomas | Daughter | — | 5 | ~1935 |
| William Thomas | Head | — | 39 | ~1901 |
| Henry Thomas | Son | — | 6 | ~1934 |
| Edith Thomas | Spouse | — | 36 | ~1904 |
Census Appearances
Son, age 9
Clay, Kansas · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Willie K. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Pennsylvania |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1920
Clay, Kansas
Son, age 19
Clay, Kansas · implied b. ~1901 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Pennsylvania |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Clay, Kansas
Son, age 29
Clay, Kansas · implied b. ~1901 — 38 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | William K. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | General farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Clay-County, Kansas
Head, age 39
Clay-County, Kansas · implied b. ~1901 — 4 household members
| Surname | Thomas |
| Given Name | William H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Hayes Township |
| 1935 Residence (County) | Clay |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Thomas across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bradley Thomas (~0.92 confidence) and father William Thomas (~0.92 confidence) and mother Agnes Thomas (~0.92 confidence) and mother Anna Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bradley Thomas
b. ~1852
Source father
● Household
· direct · ~0.92
Father
William Thomas
b. ~1851
Source father
● Household
· direct · ~0.92
Mother
Agnes Thomas
b. ~1861
Source mother
● Household
· direct · ~0.92
Mother
Anna Thomas
b. ~1861
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Thomas
Head · 1940 · age 39 · b. ~1901 · Kansas
★ 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 — Clay-County, Kansas
Open full size
1940 US Federal Census — Clay-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01224-00651)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bonnie Pfizenmaier | 10 | Daughter | — | Kansas |
| 42 | Jo Anne Pfizenmaier | 9 | Daughter | — | Kansas |
| 43 | Stanley R. Pfizenmaier | 7 | Son | — | Kansas |
| 44 | Phyllis A. Pfizenmaier | 5 | Daughter | — | Kansas |
| 45 | Frederick D. Pfizenmaier | 2 | Son | — | Kansas |
| 46 | George I. Gilbert | 60 | Head | Farmer | Kansas |
| 47 | Elsie M. Gilbert | 59 | Wife | — | Kansas |
| 48 | Charles A. Gilbert | 27 | Son | Laborer | Colorado |
| 49 | Anna Thomas | 79 | Head | — | Pennsylvania |
| 50 | William H. Thomas THIS PERSON | 39 | Head | Farmer | Kansas |
| 51 | Edith S. Thomas | 36 | Wife | — | Kansas |
| 52 | Henry W. Thomas | 6 | Son | — | Kansas |
| 53 | Rose Ann Thomas | 5 | Daughter | — | Kansas |
| 54 | Garfield B. Thomas | 59 | Head | Farmer | Kansas |
| 55 | Alice E. Thomas | 56 | Wife | — | New York |
| 56 | Paul E. Thomas | 22 | Son | Farmer | Kansas |
| 57 | Ruth A. Thomas | 19 | Daughter | Teacher | Kansas |
| 58 | William Pfizenmaier | 40 | Head | Farmer | Kansas |
| 59 | Jessie W. Pfizenmaier | 37 | Wife | — | Kansas |
| 60 | Mary E. Pfizenmaier | 15 | Daughter | — | Kansas |
| 61 | Maxine M. Pfizenmaier | 15 | Daughter | — | Kansas |
| 62 | W. Harvey Pfizenmaier | 10 | Son | — | Kansas |
| 63 | Paul E. Pfizenmaier | 7 | Son | — | Kansas |
| 64 | Shirley J. Pfizenmaier | 3 | Daughter | — | Kansas |
| 65 | Extra Line | None | — | — | — |
| 66 | Harley W. Swanberg | 43 | Head | Farmer | Kansas |
| 67 | Clara E. Swanberg | 42 | Wife | — | Kansas |
| 68 | Evelyn R. Swanberg | 15 | Daughter | — | Kansas |
| 69 | Betty J. Swanberg | 14 | Daughter | — | Kansas |
| 70 | Albin J. Algren | 52 | Head | Farmer | Kansas |
| 71 | Emma F. Algren | 49 | Wife | — | Kansas |
| 72 | Donald A. Algren | 19 | Son | Farmer | Kansas |
| 73 | Nels O. Nelson | 58 | Head | Farmer | Kansas |
| 74 | Julia A. Nelson | 61 | Wife | — | Kansas |
| 75 | Le Roy W. Nelson | 26 | Son | Farmer | Kansas |
| 76 | Marguerite M. Nelson | 20 | Daughter | — | Kansas |
| 77 | C. E. Volen | 65 | Head | Farmer | Sweden |
| 78 | Eugenie V. Volen | 56 | Wife | — | Kansas |
| 79 | Wendell E. Volen | 28 | Son | Farmer | Kansas |
| 80 | Meryl O. Volen | 20 | Son | Farmer | Kansas |
Related Census Records
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)