MD
Mary Dwyer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mason-County, Kentucky
Our Model Tree links this Mary Dwyer across the 1930 and 1940 US Censuses in Mason-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mason-County, Kentucky |
| Surname | Dwyer |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag Dis 3 |
| 1935 Residence (County) | Mason |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Mag Dis 3 |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| George Dwyer | Son | — | 17 | ~1923 |
| Joe Dwyer | Son | — | 9 | ~1931 |
| Robert Dwyer | Son | — | 29 | ~1911 |
| Maurice Dwyer | Son | — | 26 | ~1914 |
| Mary Dwyer | Daughter | — | 15 | ~1925 |
| Ida Dwyer | Spouse | — | 48 | ~1892 |
| Will Dwyer | Head | — | 59 | ~1881 |
Census Appearances
1930
Mason, Kentucky
Daughter, age 5
Mason, Kentucky · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Mason-County, Kentucky
Daughter, age 15
Mason-County, Kentucky · implied b. ~1925 — 7 household members
| Surname | Dwyer |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag Dis 3 |
| 1935 Residence (County) | Mason |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Dwyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dwyer
Daughter · 1940 · age 15 · b. ~1925 · Kentucky
★ You are viewing this record
Sibling
Maurice Dwyer
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joe Dwyer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Dwyer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Dwyer
Sibling · 1940 · age 29
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 — Mason-County, Kentucky
Open full size
1940 US Federal Census — Mason-County, Kentucky
Page Contents
21 people indexed on this census page (nara:1940:m-t0627-01340-00232)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cain Lowe | 30 | Son | Labor | Kentucky |
| 2 | Mary Lowe | 23 | Daughter | Housekeeper | Kentucky |
| 3 | Hattie Lowe | 17 | Daughter | Housekeeper | Kentucky |
| 4 | Alice Lowe | 16 | Daughter | Housekeeper | Kentucky |
| 5 | Oscar Toliver | 53 | Head | Farm Hand | Kentucky |
| 6 | Elmer Toliver | 21 | Son | Farm Hand | Kentucky |
| 7 | Rosa Toliver | 16 | Daughter | Housekeeper | Kentucky |
| 8 | Della Miller | 48 | Head | Labor | Kentucky |
| 9 | Henry Miller | 18 | Son | Labor | Kentucky |
| 10 | Grad Miller | 16 | Son | — | Kentucky |
| 11 | Clifford Miller | 14 | Son | — | Kentucky |
| 12 | J. B. Mclean | 50 | Helper | Labor | Kentucky |
| 13 | Daniel Tiffin | 40 | Head | Fisherman | Kentucky |
| 14 | Anna Trace | 38 | Head | Labor | Kentucky |
| 15 | Will Dwyer | 59 | Head | Farmer | Kentucky |
| 16 | Ida Dwyer | 48 | Wife | Housekeeper | Kentucky |
| 17 | Robert Dwyer | 29 | Son | Labor | Kentucky |
| 18 | Maurice Dwyer | 26 | Son | Clerk | Kentucky |
| 19 | George Dwyer | 17 | Son | — | Kentucky |
| 20 | Mary Jane Dwyer THIS PERSON | 15 | Daughter | — | Kentucky |
| 21 | Joe Billie Dwyer | 9 | Son | — | Kentucky |
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)