MD
Mary Dennis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Tennessee
Our Model Tree links this Mary Dennis across the 1930 and 1940 US Censuses in Jefferson-County, Tennessee (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Female
Daughter
Born: Tennessee
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Tennessee |
| Surname | Dennis |
| Given Name | Mary Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Jefferson City |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Township / Ward | Jefferson City |
| Est. Birth Year | ~1927 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Noe Dennis | Head | — | 29 | ~1911 |
| Billy Dennis | Son | — | 9 | ~1931 |
| Roger Dennis | Son | — | 6 | ~1934 |
| Mary Dennis | Spouse | — | 21 | ~1919 |
| Mary Dennis | Daughter | — | 13 | ~1927 |
| Dorothy Dennis | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Jefferson, Tennessee
Daughter, age 3
Jefferson, Tennessee · implied b. ~1927 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dennis |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Jefferson-County, Tennessee
Daughter, age 13
Jefferson-County, Tennessee · implied b. ~1927 — 6 household members
| Surname | Dennis |
| Given Name | Mary Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Tennessee |
| 1935 Residence (City) | Jefferson City |
| 1935 Residence (County) | Jefferson |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Dennis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dennis
Daughter · 1940 · age 13 · b. ~1927 · Tennessee
★ You are viewing this record
Sibling
Dorothy Dennis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roger Dennis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Dennis
Sibling · 1940 · age 9
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 — Jefferson-County, Tennessee
Open full size
1940 US Federal Census — Jefferson-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03908-00205)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John E. Johnson | 62 | Head | President | Finland |
| 2 | Ella M. Johnson | 48 | Wife | — | Tennessee |
| 3 | Adam Horner | 25 | Son | Foreman | Tennessee |
| 4 | Ernest Johnson | 22 | Son | Laborer | Tennessee |
| 5 | Hanter K. Horner | 19 | Son | Laborer | Tennessee |
| 6 | Ernest Rader | 62 | Head | Manager | Tennessee |
| 7 | Willie Mae Rader | 62 | Wife | — | Tennessee |
| 8 | Glen S. Rader | 29 | Son | Statistician | Tennessee |
| 9 | Mary M. Rader | 27 | Daughter | — | Tennessee |
| 10 | Alleynne Rader | 24 | Daughter | Librarian | Tennessee |
| 11 | Mildred Rader | 14 | Daughter | — | Tennessee |
| 12 | Jean Rader | 12 | Daughter | — | Tennessee |
| 13 | Minnie Duyck | 41 | Head | — | Tennessee |
| 14 | Pearl Allen | 49 | Head | School Teacher | Tennessee |
| 15 | Lady K. Allen | 21 | Daughter | — | Tennessee |
| 16 | Aline Allen | 17 | Daughter | — | Tennessee |
| 17 | Lunt Charles May | 27 | Head | Lieutenant | Georgia |
| 18 | Florence May | 27 | Wife | — | Tennessee |
| 19 | Dr. M. Alice Trotter | 46 | Head | Pharmacist | Ohio |
| 20 | Nellie Trotter | 44 | Wife | — | Tennessee |
| 21 | Frank Trotter | 19 | Son | — | Tennessee |
| 22 | Billy Trotter | 14 | Son | — | Tennessee |
| 23 | Noe Dennis | 29 | Head | Dog Trainer | Tennessee |
| 24 | Mary R. Dennis | 21 | Wife | — | Tennessee |
| 25 | Mary Mae Dennis THIS PERSON | 13 | Daughter | — | Tennessee |
| 26 | Dorothy D. Dennis | 11 | Daughter | — | Tennessee |
| 27 | Billy Dennis | 9 | Son | — | Tennessee |
| 28 | Roger Dennis | 6 | Son | — | Tennessee |
| 29 | Thomas Coy | 38 | Head | Dog Trainer | Indiana |
| 30 | Lola Coy | 38 | Wife | — | Indiana |
| 31 | Eula Mouncastle | 44 | Head | — | Tennessee |
| 32 | Rose Witt | 55 | Head | — | Tennessee |
| 33 | Adrian Blane | 60 | Head | General Manager | Tennessee |
| 34 | Freda Blane | 60 | Wife | — | Tennessee |
| 35 | Mary Blane | 14 | Daughter | — | Tennessee |
| 36 | Henry Blane | 12 | Son | — | Tennessee |
| 37 | Adrian Jr. Blane | 10 | Son | — | Tennessee |
| 38 | Dr. Ralph A. Hinton | 61 | Head | Doctor | Kentucky |
| 39 | Gladys H. Hinton | 47 | Wife | — | Kentucky |
| 40 | Carl Galbraith | 47 | Head | Mill Operator | Tennessee |
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)