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Thomas Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Thomas Williams across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Maurice & Hugh — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Williams |
| Given Name | Thomas H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Advertising Agent |
| Industry | Advertising |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 2500 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Advertising Agent |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1909 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Maurice Williams | Head | — | 58 | ~1882 |
| David Jones | Other | — | 20 | ~1920 |
| Donald Williams | Son | — | 11 | ~1929 |
| Thomas Williams | Son | — | 31 | ~1909 |
| Winifred Williams | Spouse | — | 52 | ~1888 |
Census Appearances
1920
King, Washington
Son, age 11
King, Washington · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Thomas H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Wales |
| Mother's Birthplace | Washington |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 21
King, Washington · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Thomas H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Wales |
| Mother's Birthplace | Washington |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 31
King-County, Washington · implied b. ~1909 — 5 household members
| Surname | Williams |
| Given Name | Thomas H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Advertising Agent |
| Industry | Advertising |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 2500 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Thomas Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Maurice Williams (~0.92 confidence) and father Hugh Williams (~0.83 confidence) and mother Jane Williams (~0.83 confidence) and mother Florence Williams (~0.92 confidence) and mother Winifred Williams (~0.92 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
Maurice Williams
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Hugh Williams
b. ~1852
Source father>father
● Household
· direct · ~0.83
Mother
Jane Williams
b. ~1860
Source father>mother
● Household
· direct · ~0.83
Mother
Florence Williams
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Winifred Williams
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Williams
Son · 1940 · age 31 · b. ~1909 · Washington
★ You are viewing this record
Sibling
Donald Williams
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04377-00608)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Matthias, Jamieson Matthews | 11 | Son | — | Washington |
| 42 | Roger H. Matthews | 8 | Son | — | Washington |
| 43 | Wilson, Clara D. Matthews | 50 | Servant | Servant | Kansas |
| 44 | Richard H. Brockman | 65 | Head | Partner | Oregon |
| 45 | Frances M. Brockman | 59 | Wife | — | Minnesota |
| 46 | Pauline V. Sundberg | 21 | Student Maid | Student Maid | Washington |
| 47 | S. A. Hull | 61 | Head | Realtor | Missouri |
| 48 | Rose D. Hull | 62 | Wife | — | Nebraska |
| 49 | Harry Hull | 19 | Son | — | Washington |
| 50 | Margaret Tillett | 30 | Servant | Servant | North Dakota |
| 51 | John R. Lawson | 56 | Head | Manager | Canada-English |
| 52 | Genevieve B. Lawson | 43 | Wife | — | California |
| 53 | Esther D. Ritari | 20 | Servant | Servant | Washington |
| 54 | Frank T. Mason | 60 | Head | Surgeon | District of Columbia |
| 55 | Anna C. Mason | 61 | Wife | — | Pennsylvania |
| 56 | Adrian A. Dilardi | 49 | Head | Civil Engineer | Brazil |
| 57 | Alice L. Dilardi | 47 | Wife | — | Switzerland |
| 58 | Dorothy V. Dilardi | 21 | Daughter | — | France |
| 59 | — | None | — | — | — |
| 60 | William Mitchell | 59 | Head | Salesman | Washington |
| 61 | Pluma M. Mitchell | 64 | Wife | — | Kansas |
| 62 | Holt Guerin | 47 | Head | Owner Manager | Oregon |
| 63 | Opal D. Guerin | 45 | Wife | — | Oregon |
| 64 | Dorothy Guerin | 17 | Daughter | — | Oregon |
| 65 | Joanne Guerin | 14 | Daughter | — | Oregon |
| 66 | Jacob Samuelson | 55 | Head | Civil Engineer | Norway |
| 67 | Ida R. Samuelson | 49 | Wife | — | Norway |
| 68 | Ida K. Samuelson | 21 | Daughter | — | Washington |
| 69 | Arthur Samuelson | 16 | Son | — | Washington |
| 70 | Leo Singer | 44 | Head | Salesman | Washington |
| 71 | Ethel D. Singer | 42 | Wife | — | Minnesota |
| 72 | Florence Singer | 13 | Daughter | — | Washington |
| 73 | Maurice Williams | 58 | Head | Owner Manager | Wales |
| 74 | Winifred Williams | 52 | Wife | — | Washington |
| 75 | Thomas H. Williams THIS PERSON | 31 | Son | Advertising Agent | Washington |
| 76 | Donald Williams | 11 | Son | — | Washington |
| 77 | David H. Jones | 20 | Nephew | Clerk | Washington |
| 78 | Robert Warren | 51 | Head | Pharmacist | Pennsylvania |
| 79 | Emma D. Warren | 47 | Wife | — | Minnesota |
| 80 | Howard M. Dias | 37 | Head | Pay Clerk | Massachusetts |
Pedigree Summary
Thomas + 1 sibling
Gen 1 · 3 parents
~0.92
Gen 2 · 2 grandparents
~0.83
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)