RT
Robert Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Robert Thomas across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents William & Will — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Thomas |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle city |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Finance Co. |
| Class of Worker | PW |
| Hours Worked | 80 |
| Income (1939) | 336 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Mechanic |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1916 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| William Thomas | Head | — | 55 | ~1885 |
| Bernard Thomas | Son | — | 27 | ~1913 |
| Robert Thomas | Son | — | 24 | ~1916 |
| Anna Thomas | Spouse | — | 53 | ~1887 |
Census Appearances
1920
King, Washington
Son, age 4
King, Washington · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Ohio |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 14
King, Washington · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 24
King-County, Washington · implied b. ~1916 — 4 household members
| Surname | Thomas |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle city |
| 1935 Residence (County) | King |
| Occupation | Mechanic |
| Industry | Finance Co. |
| Class of Worker | PW |
| Hours Worked | 80 |
| Income (1939) | 336 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Robert Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Thomas (~0.92 confidence) and father Will Thomas (~0.92 confidence) and father William 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
William Thomas
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Will Thomas
b. ~1887
Source father
● Household
· direct · ~0.92
Father
William Thomas
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Anna Thomas
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Thomas
Son · 1940 · age 24 · b. ~1916 · Washington
★ You are viewing this record
Sibling
Bernard Thomas
Sibling · 1940 · age 27
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
39 people indexed on this census page (nara:1940:m-t0627-04374-00163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Howard R. Kline | 30 | Head | Painter | Michigan |
| 42 | Ruth F. Kline | 44 | Wife | — | Illinois |
| 43 | Victor H. Brewbaker | 47 | Head | Paint Salesman | Iowa |
| 44 | Anna E. Brewbaker | 45 | Wife | — | Illinois |
| 45 | Donald V. Brewbaker | 20 | Son | Typist | Washington |
| 46 | William J. Thomas | 55 | Head | Policeman | Michigan |
| 47 | Anna E. Thomas | 53 | Wife | — | Ohio |
| 48 | Bernard J. Thomas | 27 | Son | Stock Clerk | Washington |
| 49 | Robert A. Thomas THIS PERSON | 24 | Son | Mechanic | Washington |
| 50 | Henry D. Johnson | 25 | Head | Cutter | Washington |
| 51 | Dorothy L. Johnson | 23 | Wife | — | Washington |
| 52 | David H. Johnson | 2 | Son | — | Washington |
| 53 | Clarence J. Blair | 49 | Head | Shingle Sawyer | Michigan |
| 54 | Agnes M. Blair | 45 | Wife | — | Washington |
| 55 | Helen L. Blair | 21 | Daughter | Cannery Worker | Washington |
| 56 | May J. Scott | 26 | Lodger | Laborer | Nebraska |
| 58 | Leon A. Horn | 25 | Head | Stock-Feeder | Iowa |
| 59 | Katherine J. Horn | 21 | Wife | — | Washington |
| 60 | Gary L. Horn | 1 | Son | — | Washington |
| 61 | Emmett J. O'Kelly | 32 | Head | Plumbing Salesman | New York |
| 62 | Gladys L. O'Kelly | 28 | Wife | Bookkeeper | Washington |
| 63 | Donald V. O'Kelly | 5 | Son | — | Washington |
| 64 | Richard H. Freeman | 24 | Head | Receiving Clerk | Washington |
| 65 | Goldie Freeman | 24 | Wife | Stenographer | Washington |
| 66 | May E. Fry | 42 | Head | — | California |
| 67 | Earl C. Fry | 20 | Son | — | California |
| 68 | Hans Ellingsen | 46 | Head | Brick-Mason Contractor | Minnesota |
| 69 | Ingeborg Ellingsen | 46 | Wife | — | Norway |
| 70 | Mart (A) Larsen | 53 | Head | Machinist | Norway |
| 71 | Margaret Larsen | 51 | Wife | — | Norway |
| 72 | Irene M. Larsen | 22 | Daughter | Secretary | Washington |
| 73 | Adele M. Larsen | 20 | Daughter | School Clerk | Washington |
| 74 | Lucille Jean Larsen | 15 | Daughter | Secretary | Washington |
| 75 | Charles G. Morris | 56 | Head | Glazier | Oregon |
| 76 | Christie N. Morris | 42 | Wife | — | Kansas |
| 77 | Clarence A. Morris | 24 | Son | Truck Driver | Washington |
| 78 | Elsie E. Morris | 21 | Daughter | Hem Worker | Washington |
| 79 | Edith M. Morris | 18 | Daughter | Seamstress | Washington |
| 80 | Robert Morris | 16 | Son | — | Washington |
Related Census Records
Pedigree Summary
Robert + 1 sibling
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)