MD
Mary Dalton — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Mary Dalton across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 11-person household.
Age 20
b. ~1920
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Dalton |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Occupation | Sales Clerk |
| Industry | 5-10 store |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Sales Clerk |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| John Dalton | Son | — | 21 | ~1919 |
| William Dalton | Son | — | 23 | ~1917 |
| James Dalton | Head | — | 52 | ~1888 |
| Catherine Dalton | Daughter | — | 16 | ~1924 |
| Maurice Dalton | Son | — | 21 | ~1919 |
| Cornelius Dalton | Son | — | 18 | ~1922 |
| James Dalton | Son | — | 22 | ~1918 |
| Mary Dalton | Daughter | — | 20 | ~1920 |
| Leila Dalton | Daughter | — | 21 | ~1919 |
| Maurice Dalton | Other | — | 1 | ~1939 |
| Mary Dalton | Spouse | — | 46 | ~1894 |
Census Appearances
1930
St Louis, …
Daughter, age 10
St Louis, Missouri · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 20
St.-Louis-City-County, Missouri · implied b. ~1920 — 11 household members
| Surname | Dalton |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (City) |
| 1935 Residence (County) | St. Louis City |
| Occupation | Sales Clerk |
| Industry | 5-10 store |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 20 · b. ~1920 · Missouri
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Sibling
James Dalton
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Dalton
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leila Dalton
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Dalton
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maurice Dalton
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cornelius Dalton
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Dalton
Sibling · 1940 · age 23
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.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02201-00743)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis Dooley | 32 | Head | Truck Driver | Missouri |
| 2 | Florence Dooley | 28 | Wife | — | Missouri |
| 3 | Donald Dooley | 9 | Son | — | Missouri |
| 4 | Bernard Rosenthal | 19 | Son-in-law | Machinist | Missouri |
| 5 | Bernice Rosenthal | 18 | Daughter | Factory Helper | Missouri |
| 6 | William Bell | 76 | Father-in-law | — | Missouri |
| 7 | Ellen Bell | 67 | Mother-in-law | — | Missouri |
| 8 | Jeremy Stadenow | 71 | Head | Carpenter | Missouri |
| 9 | Lulu Stadenow | 68 | Wife | — | Illinois |
| 10 | Hilda Stadenow | 42 | Daughter | Milliner | Illinois |
| 11 | James Dalton | 52 | Head | Sampler | Missouri |
| 12 | Mary Dalton | 46 | Wife | — | Missouri |
| 13 | William Dalton | 23 | Son | Hauler | Missouri |
| 14 | James Jr. Dalton | 22 | Son | Factory Worker | Missouri |
| 15 | Mary A. Dalton THIS PERSON | 20 | Daughter | Sales Clerk | Missouri |
| 16 | Cornelius Dalton | 18 | Son | Laborer-Apprentice | Missouri |
| 17 | Catherine Dalton | 16 | Daughter | — | Missouri |
| 18 | John Dalton | 21 | Son | — | Missouri |
| 19 | Maurice Dalton | 21 | Son | Plasterer | Missouri |
| 20 | Leila Dalton | 21 | Daughter | — | Missouri |
| 21 | Maurice Jr. Dalton | 1 | Grandson | — | Missouri |
| 22 | Walter Hoffman | 30 | Head | Spotter-Presser | Missouri |
| 23 | Elvira Hoffman | 35 | Wife | — | Illinois |
| 24 | Wallace Hoffman | 9 | Son | — | Missouri |
| 25 | Marguerite Ward | 12 | Head | Canvassing | Missouri |
| 26 | Elizabeth Saunders | 25 | Lodger | Waitress | Missouri |
| 27 | Benedict Bertel | 54 | Head | Supervisor | Illinois |
| 28 | Matilda Bertel | 53 | Wife | — | Missouri |
| 29 | Oliver Bertel | 18 | Son | — | Missouri |
| 30 | Delores Bertel | 14 | Daughter | — | Missouri |
| 31 | Samuel E. Mccord | 36 | Head | Assistant-Traffic Manager | Arkansas |
| 32 | Grace Mccord | 34 | Wife | — | Arkansas |
| 33 | Mamille Mccord | 16 | Daughter | — | Arkansas |
| 34 | William Kelly | 35 | Head | Bottom Polisher | Missouri |
| 35 | Helen Kelly | 32 | Wife | — | Missouri |
| 36 | Helen Kelly | 12 | Daughter | — | Missouri |
| 37 | William Jr. Kelly | 10 | Son | — | Missouri |
| 38 | Lester Kelly | 9 | Son | — | Missouri |
| 39 | Joseph Kelly | 8 | Son | — | Missouri |
| 40 | Raymond Kelly | 1 | Son | — | 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)