MS
Mary Simmons — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Mary Simmons across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 9-person household.
Age 39
b. ~1901
Female
Spouse
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Simmons |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Salt Lake City |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Simmons | Daughter | — | 18 | ~1922 |
| Edna Mccrystal | Daughter | — | 6 | ~1934 |
| Verna Simmons | Daughter | — | 7 | ~1933 |
| W Simmons | Head | — | 44 | ~1896 |
| Arthur Keddington | Son | — | 21 | ~1919 |
| James Simmons | Son | — | 3 | ~1937 |
| David Simmons | Son | — | 10 | ~1930 |
| W Simmons | Son | — | 4 | ~1936 |
| Mary Simmons | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Salt Lake, …
Other, age 18
Salt Lake, Utah · implied b. ~1902 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simmons |
| Given Name | May R. |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Other, age 29
Salt Lake, Utah · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simons |
| Given Name | Mary J |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 19 |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Spouse, age 39
Salt-Lake-County, Utah · implied b. ~1901 — 9 household members
| Surname | Simmons |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Highest Grade | H 4 |
| 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 Mary Simmons across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Simmons
Spouse · 1940 · age 39 · b. ~1901 · 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
38 people indexed on this census page (nara:1940:m-t0627-04226-00878)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Newmeyer | 7 | Son | — | Utah |
| 2 | Jeanne Hoolbeck | 30 | Nurse | Nurse | Holland |
| 3 | Verma Ruth Nielsen | 20 | Maid | Maid | Utah |
| 4 | Bernard Bertelson | 29 | Head | Broker | Utah |
| 5 | Hope S. Bertelson | 28 | Wife | — | Utah |
| 6 | Betty J. Bertelson | 6 | Daughter | — | Washington |
| 7 | Earnest S. Faulkner | 32 | Head | Watch Repair | Massachusetts |
| 8 | Zorian Faulkner | 28 | Wife | — | New York |
| 9 | Louis H. Booth | 25 | Son-in-law | — | Idaho |
| 10 | Marguerite Booth | 24 | Daughter-in-law | — | Belgium |
| 11 | Celeste Booth | 2 | Daughter | — | Utah |
| 12 | Margaret Maloney | 15 | Daughter | — | Utah |
| 13 | Isabell Bailey | 77 | Mother-in-law | — | Utah |
| 14 | Dorothy Anderson | 31 | Sister-in-law | — | Utah |
| 15 | Clarence D. Heine | 21 | Head | Collector | Indiana |
| 16 | Berle R. Heine | 20 | Wife | — | Utah |
| 17 | Slavie Robinson | 5 | Daughter | — | Utah |
| 18 | Janice Robinson | 2 | Daughter | — | Utah |
| 19 | Kathryn J. Tracy | 26 | Wife | — | Utah |
| 20 | Patricia Tracy | 5 | Daughter | — | Utah |
| 21 | James R. Tracy | 2 | Son | — | Utah |
| 22 | Jeanne Tracy | 1 | Daughter | — | Utah |
| 23 | Beulah Glenn | 40 | Daughter | Typing Auxiliary | Illinois |
| 24 | Mary Jane Van Cort | 14 | Daughter | — | Utah |
| 25 | Mary A. Hiss | 64 | Head | — | Indiana |
| 26 | Lee H. Dymock | 33 | Head | Salesman | Colorado |
| 27 | Genevieve H. Dymock | 28 | Wife | — | Utah |
| 28 | Franklin Justesen | 24 | Lodger | Salesman | Utah |
| 29 | W. Brent Simmons | 44 | Head | Mail Carrier | Montana |
| 30 | Mary Simmons THIS PERSON | 39 | Wife | — | Utah |
| 31 | Margaret Simmons | 18 | Daughter | — | Utah |
| 32 | David Simmons | 10 | Son | — | Utah |
| 33 | Verna L. Simmons | 7 | Daughter | — | Utah |
| 34 | W. Brent Jr. Simmons | 4 | Son | — | Utah |
| 35 | James T. Simmons | 3 | Son | — | Utah |
| 36 | Arthur J. Keddington | 21 | Son | New Worker | Utah |
| 37 | Edna Earle Mccrystal | 6 | Daughter | — | Missouri |
| 38 | Edward L. Alexander | 32 | Head | Biology | Missouri |
Related Census Records
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)