MD
Mary Dillon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Butler-County, Ohio
Our Model Tree links this Mary Dillon across the 1930 and 1940 US Censuses in Butler-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1908), then head of a 9-person household.
Age 32
b. ~1908
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Ohio |
| Surname | Dillon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Middletown City |
| 1935 Residence (County) | Butler |
| Additional Details | |
| Occupation | secretary |
| Industry | insurance office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Secretary |
| Township / Ward | Middletown City |
| Est. Birth Year | ~1908 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Dillon | Daughter | — | 15 | ~1925 |
| Frances Dillon | Daughter | — | 25 | ~1915 |
| Eileen Dillon | Daughter | — | 28 | ~1912 |
| Mary Dillon | Daughter | — | 32 | ~1908 |
| Julia Dillon | Head | — | 56 | ~1884 |
| David Dillon | Son | — | 15 | ~1925 |
| Joseph Dillon | Son | — | 18 | ~1922 |
| John Dillon | Son | — | 21 | ~1919 |
| James Dillon | Son | — | 19 | ~1921 |
Census Appearances
1930
Butler, Ohio
Daughter, age 22
Butler, Ohio · implied b. ~1908 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dillon |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Secretary |
| Industry | Ins. Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Butler-County, Ohio
Daughter, age 32
Butler-County, Ohio · implied b. ~1908 — 9 household members
| Surname | Dillon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Middletown City |
| 1935 Residence (County) | Butler |
| Occupation | secretary |
| Industry | insurance office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Dillon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dillon
Daughter · 1940 · age 32 · b. ~1908 · Ohio
★ You are viewing this record
Sibling
Eileen Dillon
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Dillon
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Dillon
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Dillon
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Dillon
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Dillon
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Dillon
Sibling · 1940 · age 18
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 — Butler-County, Ohio
Open full size
1940 US Federal Census — Butler-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03034-00462)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Kelley | 23 | Wife | — | Ohio |
| 42 | Helen Kelley | 7 | Daughter | — | Ohio |
| 43 | James Richard Kelley | 4 | Son | — | Ohio |
| 44 | Shirley Ann Kelley | 2 | Daughter | — | Ohio |
| 45 | Carol Ann Kelley | 0 | Daughter | — | Ohio |
| 46 | Thomas Cull | 52 | Head | Fireman | Kentucky |
| 47 | Stella Cull | 52 | Wife | — | Kentucky |
| 48 | Elva Cull | 33 | Daughter | — | Ohio |
| 49 | Billy Joe Maxwell | 11 | Son | — | Ohio |
| 50 | Willard R. Fleener | 33 | Head | Assistant Manager | Illinois |
| 51 | Marion Irene Fleener | 29 | Wife | — | Illinois |
| 52 | Dorotha Jean Fleener | 10 | Daughter | — | Illinois |
| 53 | Edward Clayton Fleener | 6 | Son | — | Illinois |
| 54 | Clarence Hall | 35 | Head | Machine Operator | Tennessee |
| 55 | Theresia Hall | 31 | Wife | — | Ohio |
| 56 | Donald Hall | 4 | Son | — | Ohio |
| 57 | William Hall | 3 | Daughter | — | Ohio |
| 58 | William A. Pont | 31 | Head | Policeman | Virginia |
| 59 | Irene Pont | 32 | Wife | — | Ohio |
| 60 | Robert Pont | 4 | Son | — | Ohio |
| 61 | Shirley Pont | 2 | Daughter | — | Ohio |
| 62 | Elmer Cain | 42 | Head | Interior Decorator | Kentucky |
| 63 | Nona Cain | 39 | Wife | — | Kentucky |
| 64 | Rose Mary Cain | 11 | Daughter | — | Kentucky |
| 65 | Julia A. Dillon | 56 | Head | — | Ohio |
| 66 | Mary Dillon THIS PERSON | 32 | Daughter | Secretary | Ohio |
| 67 | Eileen Dillon | 28 | Daughter | Trained Nurse | Ohio |
| 68 | Frances Dillon | 25 | Daughter | Secretary | Ohio |
| 69 | John Dillon | 21 | Son | Florist Assistant | Ohio |
| 70 | James Dillon | 19 | Son | Apprentice Machinist | Indiana |
| 71 | Joseph Dillon | 18 | Son | — | Ohio |
| 72 | Agnes Dillon | 15 | Daughter | — | Ohio |
| 73 | David Dillon | 15 | Son | — | Ohio |
| 74 | (There Ends Block With Last Member) | None | — | — | — |
| 75 | Mahala Sheers | 74 | Head | — | Indiana |
| 76 | Harold J. Kennedy | 34 | Head | Journeyman | Ohio |
| 77 | Rosalia Kennedy | 32 | Wife | — | Indiana |
| 78 | Barbara Sue Kennedy | 8 | Daughter | — | Ohio |
| 79 | Harold Jr. Kennedy | 6 | Son | — | Ohio |
| 80 | John J. Leach | 60 | Law | Journeyman | Indiana |
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)