MH
Mary Hickey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Mary Hickey across the 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 12-person household.
Age 20
b. ~1920
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Ohio |
| Surname | Hickey |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Finisher |
| Industry | Dress Mfg |
| Class of Worker | PW |
| Hours Worked | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Finisher |
| Township / Ward | Dayton 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hickey | Daughter | — | 20 | ~1920 |
| Lois Hickey | Daughter | — | 10 | ~1930 |
| Alma Hickey | Daughter | — | 12 | ~1928 |
| Madonna Hickey | Daughter | — | 6 | ~1934 |
| Martha Hickey | Daughter | — | 18 | ~1922 |
| Albert Hickey | Head | — | 51 | ~1889 |
| Daniel Hickey | Son | — | 9 | ~1931 |
| Paul Hickey | Son | — | 16 | ~1924 |
| Jack Hickey | Son | — | 15 | ~1925 |
| Fred Hickey | Son | — | 14 | ~1926 |
| Albert Hickey | Son | — | 24 | ~1916 |
| Elizabeth Hickey | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Montgomery, Ohio
Daughter, age 10
Montgomery, Ohio · implied b. ~1920 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickey |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Montgomery-County, Ohio
Daughter, age 20
Montgomery-County, Ohio · implied b. ~1920 — 12 household members
| Surname | Hickey |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton City |
| 1935 Residence (County) | Montgomery |
| Occupation | Finisher |
| Industry | Dress Mfg |
| Class of Worker | PW |
| Hours Worked | 0 |
| 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 Hickey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hickey
Daughter · 1940 · age 20 · b. ~1920 · Ohio
★ You are viewing this record
Sibling
Albert Hickey
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Hickey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Hickey
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madonna Hickey
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Hickey
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Hickey
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alma Hickey
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Hickey
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Hickey
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 — Montgomery-County, Ohio
Open full size
1940 US Federal Census — Montgomery-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03252-00635)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Maude B Starr | 64 | Wife | — | Ohio |
| 2 | Suzanne Starr | 38 | Daughter | — | Ohio |
| 3 | Esther Kelly | 34 | Lodger | Librarian | Indiana |
| 4 | Gertrude E Stover | 39 | Lodger | Saleswoman | Ohio |
| 5 | Donner H Griffith | 41 | Head | — | Ohio |
| 6 | Marcella G Griffith | 30 | Wife | Bookkeeper | Ohio |
| 7 | Joseph Bennett | 54 | Head | School Teacher | Austria |
| 8 | Gertrude Bennett | 52 | Wife | Salesman | Russia |
| 9 | Milton Bennett | 26 | Son | — | Ohio |
| 10 | Eugene Bennett | 16 | Son | Salesman | Ohio |
| 11 | Irene Lawner | 53 | Sister-in-law | — | Rumania |
| 12 | Lawrence A Pfeiffer | 41 | Head | Sales Lady | Ohio |
| 13 | Marjorie J Pfeiffer | 40 | Wife | Letter Carrier | Ohio |
| 14 | Robert Pfeiffer | 15 | Son | — | Ohio |
| 15 | Sarah Pfeiffer | 13 | Son | — | Ohio |
| 16 | David Pfeiffer | 9 | Son | — | Ohio |
| 17 | Mary Pfeiffer | 8 | Daughter | — | Ohio |
| 18 | Thomas Pfeiffer | 4 | Son | — | Ohio |
| 19 | Arch M Barrett | 63 | Head | Sales Promoter | Canada-English |
| 20 | Mary G Barrett | 63 | Wife | — | Wisconsin |
| 21 | William W Cobbs | 35 | Head | Chemist | Alabama |
| 22 | Frances R Cobbs | 25 | Wife | — | Alabama |
| 23 | William Cobbs | 1 | Son | — | Ohio |
| 24 | Robert L Tripp | 30 | Head | Test Board | Ohio |
| 25 | Blair M Tripp | 31 | Wife | Nurse | Ohio |
| 26 | Otis L Crawford | 55 | Lodger | Installation Foreman | Indiana |
| 27 | Albert J Hickey | 51 | Head | Contractor | Ohio |
| 28 | Elizabeth A Hickey | 47 | Wife | — | Ohio |
| 29 | Albert J Jr Hickey | 24 | Son | Sheet Metal Worker | Ohio |
| 30 | Mary Ellen Hickey THIS PERSON | 20 | Daughter | Finisher | Ohio |
| 31 | Martha Ann Hickey | 18 | Daughter | — | Ohio |
| 32 | Paul Joseph Hickey | 16 | Son | — | Ohio |
| 33 | Jack Edward Hickey | 15 | Son | — | Ohio |
| 34 | Fred James Hickey | 14 | Son | — | Ohio |
| 35 | Alma Jean Hickey | 12 | Daughter | — | Ohio |
| 36 | Lois Jane Hickey | 10 | Daughter | — | Ohio |
| 37 | Daniel M Hickey | 9 | Son | — | Ohio |
| 38 | Madonna J Hickey | 6 | Daughter | — | Ohio |
| 39 | Louetta V Williamson | 65 | Head | — | Ohio |
| 40 | Thelma Williamson | 36 | Daughter | School Teacher | Ohio |
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)