FS
Frank Simpson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Frank Simpson across the 1910, 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a head (b.~1898), then head of a 7-person household.
Age 42
b. ~1898
Male
Head
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Simpson |
| Given Name | Frank G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Electric Motor man |
| Industry | Rail Rd. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 471 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Electric Motor Man |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1898 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Frank Simpson | Head | — | 42 | ~1898 |
| Westfield Harris | Other | — | 55 | ~1885 |
| Myrtle Simpson | Spouse | — | 43 | ~1897 |
| Catherine Simpson | Daughter | — | 9 | ~1931 |
| John Simpson | Son | — | 6 | ~1934 |
| Harold Harris | Other | — | 52 | ~1888 |
| Betty Simpson | Daughter | — | 15 | ~1925 |
Census Appearances
1910
Salt Lake, …
Son, age 12
Salt Lake, Utah · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Frank W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | England |
| Mother's Birthplace | Denmark |
| Occupation | Driver |
| Industry | Grocery Wagon |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1920
Salt Lake, …
Son, age 22
Salt Lake, Utah · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Frank W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | England |
| Mother's Birthplace | Denmark |
| Occupation | Fireman |
| Industry | City Fire Dept |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Son, age 32
Salt Lake, Utah · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Frank W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 26 |
| Father's Birthplace | England |
| Mother's Birthplace | Denmark |
| Occupation | Operator |
| Industry | Street Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 42
Salt-Lake-County, Utah · implied b. ~1898 — 7 household members
| Surname | Simpson |
| Given Name | Frank G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | Electric Motor man |
| Industry | Rail Rd. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 471 |
| Highest Grade | H 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 Frank Simpson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Simpson (~0.92 confidence) and mother Mary Simpson (~0.92 confidence) and mother Mary Simpson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Simpson
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Simpson
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Simpson
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Simpson
Head · 1940 · age 42 · b. ~1898 · Utah
★ 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 — 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-t0627-04225-00151)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Claire S. Thompson | 9 | Son | — | Utah |
| 42 | Cloyd E. Thompson | 7 | Son | — | Utah |
| 43 | James B. Case | 74 | Head | — | Mississippi |
| 44 | Mary Case | 70 | Wife | — | Louisiana |
| 45 | Frank G. Simpson THIS PERSON | 42 | Head | Electric Motor Man | Utah |
| 46 | Myrtle Simpson | 43 | Wife | — | Utah |
| 47 | Betty M. Simpson | 15 | Daughter | — | Utah |
| 48 | Catherine L. Simpson | 9 | Daughter | — | Utah |
| 49 | John W. Simpson | 6 | Son | — | Utah |
| 50 | Harold Harris | 52 | Brother-in-law | — | Utah |
| 51 | Westfield Harris | 55 | Brother-in-law | Truck Driver | Utah |
| 52 | Charles O. Furman | 76 | Head | — | France |
| 53 | Rosie Furman | 75 | Wife | — | Germany |
| 54 | Elvind Rasmussen | 70 | Head | — | Denmark |
| 55 | William C. Randall | 59 | Head | Truck Driver | England |
| 56 | Lizzie A. Randall | 56 | Wife | — | Germany |
| 57 | Beatrice M. Randall | 36 | Daughter | Sorter | Utah |
| 58 | Edna E. Randall | 27 | Daughter | House Worker | Utah |
| 59 | Ray E. Randall | 22 | Son | Printer | Utah |
| 60 | Norman Randall | 19 | Son | — | Utah |
| 61 | Milo Randall | 16 | Son | — | Utah |
| 62 | Albert W. Harris | 28 | Head | Laborer | Utah |
| 63 | Mildred Harris | 28 | Wife | — | Utah |
| 64 | Noreen M. Harris | 7 | Daughter | — | Utah |
| 65 | Wynona M. Harris | 6 | Daughter | — | Utah |
| 66 | Shirley W. Harris | 4 | Daughter | — | Utah |
| 67 | James M. Arbuckle | 70 | Head | — | Kentucky |
| 68 | Josephine Arbuckle | 64 | Wife | — | Missouri |
| 69 | Louisa Westbrook | 65 | Head | — | Switzerland |
| 70 | Cornelius Westbrook | 31 | Son | Boiler Maker | Utah |
| 71 | Mason Westbrook | 26 | Son | Laborer | Utah |
| 72 | Millard Birrell | 25 | Head | Truck Driver | Utah |
| 73 | Madeline Birrell | 21 | Wife | — | Utah |
| 74 | Laddy J. Birrell | 2 | Daughter | — | Utah |
| 75 | William E. Brown | 53 | Head | Repairman | Michigan |
| 76 | Flora L. Brown | 54 | Wife | — | Utah |
| 77 | Marion Brown | 18 | Daughter | — | Utah |
| 78 | Virginia Brown | 13 | Daughter | — | Utah |
| 79 | John S. Hicks | 15 | Son | — | Utah |
| 80 | Extra L. Hicks | 11 | Son | — | Utah |
Pedigree Summary
Frank
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)