MS
Mary Sargent — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Summit-County, Utah
Our Model Tree links this Mary Sargent across the 1930 and 1940 US Censuses in Summit-County, Utah (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Female
Daughter
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Summit-County, Utah |
| Surname | Sargent |
| Given Name | Mary D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Coalville city |
| 1935 Residence (County) | Summit |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H 3 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Coalville City |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Sargent | Head | — | 44 | ~1896 |
| Mary Sargent | Daughter | — | 18 | ~1922 |
| Lois Sargent | Daughter | — | 19 | ~1921 |
| William Sargent | Son | — | 11 | ~1929 |
| Lynette Sargent | Daughter | — | 15 | ~1925 |
| Gladys Sargent | Daughter | — | 13 | ~1927 |
| James Sargent | Son | — | 7 | ~1933 |
| Lois Sargent | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Summit, Utah
Daughter, age 7
Summit, Utah · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sargent |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Colorado |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Summit-County, Utah
Daughter, age 18
Summit-County, Utah · implied b. ~1922 — 8 household members
| Surname | Sargent |
| Given Name | Mary D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Coalville city |
| 1935 Residence (County) | Summit |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H 3 |
| 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 Sargent across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Sargent
Daughter · 1940 · age 18 · b. ~1922 · Utah
★ You are viewing this record
Sibling
Gladys Sargent
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sargent
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Sargent
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Sargent
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lynette Sargent
Sibling · 1940 · age 15
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 — Summit-County, Utah
Open full size
1940 US Federal Census — Summit-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04218-00012)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David Daniel Lange | 47 | Head | Special Agent | Utah |
| 2 | Elnora Seely Lange | 46 | Wife | — | Utah |
| 3 | Max D. Lange | 21 | Son | — | Utah |
| 4 | Gerald S. Lange | 16 | Son | — | Utah |
| 5 | Marjorie Gay Lange | 6 | Daughter | — | Utah |
| 6 | Sarah Edith Copley | 63 | Head | — | Utah |
| 7 | Thomas Leroy Walker | 33 | Nephew | Farmer | Utah |
| 8 | William H. Sargent | 44 | Head | Post Master | Utah |
| 9 | Lois C. Sargent | 39 | Wife | — | Utah |
| 10 | Lois E. Sargent | 19 | Daughter | — | Utah |
| 11 | Mary D. Sargent THIS PERSON | 18 | Daughter | — | Utah |
| 12 | Lynette Sargent | 15 | Daughter | — | Utah |
| 13 | Gladys Sargent | 13 | Daughter | — | Utah |
| 14 | William C. Sargent | 11 | Son | — | Utah |
| 15 | James B. Sargent | 7 | Son | — | Utah |
| 16 | Hannah E. Sargent | 69 | Head | — | Utah |
| 17 | Adren L. Warner | 39 | Head | Automobile Mechanic | Utah |
| 18 | Marie Warner | 35 | Wife | — | Denmark |
| 19 | Adren Reed Warner | 13 | Son | — | Utah |
| 20 | Marjorie Edith Warner | 12 | Daughter | — | Utah |
| 21 | Willie Leon Warner | 11 | Son | — | Utah |
| 22 | Carl Keith Warner | 8 | Son | — | Utah |
| 23 | John L. Lunn | 75 | Head | Farmer | Utah |
| 24 | Mary L. Lunn | 74 | Wife | — | Utah |
| 25 | William W. Beech | 65 | Head | Farmer | Wyoming |
| 26 | Matilda Beech | 63 | Wife | — | Utah |
| 27 | Basil Beech | 12 | Son | — | Utah |
| 28 | Joseph W. Wilde | 75 | Head | Night Watchman | Utah |
| 29 | Ole A. Ostler | 43 | Head | Labourer | Utah |
| 30 | Florence Ostler | 43 | Wife | — | Utah |
| 31 | Wayne Ostler | 22 | Son | — | Utah |
| 32 | Gale Ostler | 14 | Son | — | Utah |
| 33 | Dorothy Ostler | 12 | Daughter | — | Utah |
| 34 | Thelma Ostler | 11 | Daughter | — | Utah |
| 35 | Lloyd Ostler | 9 | Son | — | Utah |
| 36 | Samuel Wilde | 60 | Head | Miner | Utah |
| 37 | Agnes W. Wilde | 58 | Wife | — | Utah |
| 38 | Charles W. Wilde | 26 | Son | Car Man | Utah |
| 39 | Charles L. Frost | 55 | Head | Bookkeeper | Utah |
| 40 | Martha Frost | 53 | Wife | — | Utah |
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)