TH
Thomas Harrison — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Thomas Harrison across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents Mary & William — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Harrison |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Richard Harrison | Son | — | 16 | ~1924 |
| Mary Harrison | Daughter | — | 20 | ~1920 |
| Thomas Harrison | Son | — | 21 | ~1919 |
| William Harrison | Son | — | 24 | ~1916 |
| William Harrison | Head | — | 55 | ~1885 |
| Catherine Robinson | Other | — | 52 | ~1888 |
Census Appearances
1920
Salt Lake, …
Son, age 1
Salt Lake, Utah · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Montana |
| Occupation | none |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Son, age 11
Salt Lake, Utah · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | Thomas A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Montana |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Son, age 21
Salt-Lake-County, Utah · implied b. ~1919 — 6 household members
| Surname | Harrison |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Income (1939) | 0 |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Harrison across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Harrison (~0.92 confidence) and father William Harrison (~0.92 confidence) and father William Harrison (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Harrison
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
William Harrison
b. ~1885
Source father
● Household
· direct · ~0.92
Father
William Harrison
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thomas Harrison
Son · 1940 · age 21 · b. ~1919 · Utah
★ You are viewing this record
Sibling
Richard Harrison
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Harrison
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Harrison
Sibling · 1940 · age 24
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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04227-00699)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tracy Rookidge | 67 | Head | Stat. Engineer | Canada English |
| 2 | Bessie Rookidge | 66 | Wife | — | Utah |
| 3 | Dwight Rookidge | 32 | Son | Salesman | Utah |
| 4 | Darlene Rookidge | 20 | Daughter | — | Utah |
| 5 | Leo W. Anderson | 69 | Head | Painter | Utah |
| 6 | Agnes A. Anderson | 67 | Wife | — | Scotland |
| 7 | Joseph G. Anderson | 27 | Head | Book Keeper | Utah |
| 8 | Margaret Anderson | 26 | Wife | Steno | Utah |
| 9 | O. Blaker Blaser | 23 | Head | Truck Driver | Utah |
| 10 | Ruby Blaser | 21 | Wife | Clerk | Utah |
| 11 | Justin Stewart | 27 | Head | Supervisor | New York |
| 12 | Martha Stewart | 24 | Wife | — | Utah |
| 13 | Peter Stewart | 1 | Son | — | Utah |
| 14 | Raymond Eldredge | 31 | Head | Salesman | Utah |
| 15 | Emma Eldredge | 31 | Wife | — | Utah |
| 16 | Marilyn Eldredge | 7 | Daughter | — | Utah |
| 17 | Nadene Eldredge | 2 | Daughter | — | Utah |
| 18 | John R Stewart | 62 | Head | Civil Eng. | Utah |
| 19 | Esther C Stewart | 60 | Wife | — | Utah |
| 20 | Hilton Stewart | 38 | Son | Teacher | Utah |
| 21 | John C. Stewart | 41 | Son | Steno. | Utah |
| 22 | John R. Stewart | 7 | Grandson | — | Utah |
| 23 | William Harrison | 55 | Head | Salesman | Iowa |
| 24 | William Jr Harrison | 24 | Son | Mechanic | Utah |
| 25 | Thomas Harrison THIS PERSON | 21 | Son | — | Utah |
| 26 | Mary Harrison | 20 | Daughter | — | Utah |
| 27 | Richard Harrison | 16 | Son | — | Utah |
| 28 | Catherine Robinson | 52 | Sister | Librarian | Iowa |
| 29 | David Spitz | 68 | Head | Realtor | Mich |
| 30 | Stella Spitz | 65 | Wife | — | Indiana |
| 31 | Afton Larsen | 18 | Maid | Maid | Utah |
| 32 | H. L. Tod Hunter | 41 | Head | Machinist | Utah |
| 33 | Ruth Hunter | 40 | Wife | — | Colo |
| 34 | Ruth Hunter | 17 | Daughter | — | Utah |
| 35 | Henry Fajen | 45 | Head | Salesman | New York |
| 36 | Betty Fajen | 34 | Wife | — | Texas |
| 37 | Andrew B Norris | 30 | Head | Tile Setter | Utah |
| 38 | Lavon D Norris | 26 | Wife | — | Utah |
| 39 | Janet Norris | 6 | Daughter | — | Utah |
| 40 | George Grote | 52 | Head | Mechanical Engineer | Illinois |
Pedigree Summary
Thomas + 3 siblings
Gen 1 · 3 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)