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Mary Dalton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Charles-County, Missouri
Our Model Tree links this Mary Dalton across the 1930 and 1940 US Censuses in St.-Charles-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Charles-County, Missouri |
| Surname | Dalton |
| Given Name | Mary Lucille |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Charles City |
| 1935 Residence (County) | St Charles |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Charles City |
| Est. Birth Year | ~1925 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Dalton | Daughter | — | 7 | ~1933 |
| Martha Dalton | Daughter | — | 4 | ~1936 |
| Evelyn Dalton | Spouse | — | 42 | ~1898 |
| Richard Dalton | Son | — | 12 | ~1928 |
| Warren Dalton | Son | — | 21 | ~1919 |
| Harriet Dalton | Daughter | — | 19 | ~1921 |
| Mary Dalton | Daughter | — | 15 | ~1925 |
| Donald Dalton | Son | — | 9 | ~1931 |
| Chauncey Dalton | Son | — | 17 | ~1923 |
| Warren Dalton | Head | — | 49 | ~1891 |
| David Dalton | Son | — | ~1940 |
Census Appearances
1930
St Charles, …
Daughter, age 5
St Charles, Missouri · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Mary L. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Charles-County, Missouri
Daughter, age 15
St.-Charles-County, Missouri · implied b. ~1925 — 11 household members
| Surname | Dalton |
| Given Name | Mary Lucille |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St Charles City |
| 1935 Residence (County) | St Charles |
| Highest Grade | H 2 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Dalton across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dalton
Daughter · 1940 · age 15 · b. ~1925 · Missouri
★ You are viewing this record
Sibling
David Dalton
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Dalton
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Dalton
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Dalton
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chauncey Dalton
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriet Dalton
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Dalton
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Dalton
Sibling · 1940 · age 12
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 — St.-Charles-County, Missouri
Open full size
1940 US Federal Census — St.-Charles-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02145-00469)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion Carlson | 59 | Head | Music Teacher | Maryland |
| 2 | Janet Carlson | 20 | Daughter | Music Teacher | Missouri |
| 3 | Alice Duke | 59 | Head | None | Missouri |
| 4 | T Katherine Duke | 36 | Daughter | Teacher | Missouri |
| 5 | Eydie Lemme | 70 | Head | Nurse | Virginia |
| 6 | David Lemme | 8 | Son | — | Missouri |
| 7 | Leland Cunningham | 53 | Head | Deputy Sheriff | Illinois |
| 8 | Martha Cunningham | 53 | Wife | None | Missouri |
| 9 | Blanton Holliday | 20 | Servant | Porter | Missouri |
| 10 | Warren R Dalton | 49 | Head | Attorney | Missouri |
| 11 | Evelyn Dalton | 42 | Wife | — | Missouri |
| 12 | Warren R Jr Dalton | 21 | Son | — | Missouri |
| 13 | Harriet M Dalton | 19 | Daughter | — | Missouri |
| 14 | Chauncey W Dalton | 17 | Son | — | Missouri |
| 15 | Mary Lucille Dalton THIS PERSON | 15 | Daughter | — | Missouri |
| 16 | Richard Lee Dalton | 12 | Son | — | Missouri |
| 17 | Donald Eugene Dalton | 9 | Son | — | Missouri |
| 18 | Evelyn Dalton | 7 | Daughter | — | Missouri |
| 19 | Martha Ann Dalton | 4 | Daughter | — | Missouri |
| 20 | David Dalton | 0 | Son | — | Missouri |
| 21 | Lena Kolweg | 72 | Head | — | Missouri |
| 22 | Otto H Ehlmann | 54 | Head | Clerk | Missouri |
| 23 | Clifton H Ehlmann | 32 | Son | Machinist | Missouri |
| 24 | Russell Ehlmann | 30 | Son | Time Clerk | Missouri |
| 25 | Cleo-Vivian Ehlmann | 21 | Daughter | — | Missouri |
| 26 | Estelle Pfaff | 48 | Head | Teacher | Missouri |
| 27 | Carrie Pfaff | 62 | Sister | Seamstress | Missouri |
| 28 | Julius Pfaff | 60 | Brother | Carpenter | Missouri |
| 29 | Alma Pfaff | 56 | Sister | — | Missouri |
| 30 | Eugene Pfaff | 54 | Brother | — | Missouri |
| 31 | John M Wilson | 57 | Head | Watchman | Missouri |
| 32 | Mabel C Wilson | 55 | Wife | — | Missouri |
| 33 | Ruth M Wilson | 30 | Daughter | Teacher | Missouri |
| 34 | Thomas B Henson | 32 | Head | Shoe Worker | Missouri |
| 35 | Yvonne Henson | 28 | Wife | — | Ohio |
| 36 | Margaret Ann Henson | 9 | Daughter | — | Missouri |
| 37 | Thomas B Henson | 6 | Son | — | Missouri |
| 38 | Paul H Henson | 1 | Son | — | Missouri |
| 39 | Fred J Koester | 64 | Head | Guard | Illinois |
| 40 | Julia A Koester | 61 | Wife | — | Germany |
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)