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Mary Hickey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allen-County, Indiana
Our Model Tree links this Mary Hickey across the 1930 and 1940 US Censuses in Allen-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allen-County, Indiana |
| Surname | Hickey |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Ft Wayne |
| 1935 Residence (County) | Allen |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Ind |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Ft Wayne City |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Rosemary Hickey | Daughter | — | 17 | ~1923 |
| Bernadine Hickey | Daughter | — | 7 | ~1933 |
| Jane Hickey | Daughter | — | 14 | ~1926 |
| Patricia Hickey | Daughter | — | 5 | ~1935 |
| Mary Hickey | Daughter | — | 19 | ~1921 |
| Lawrence Hickey | Head | — | 47 | ~1893 |
| Joseph Hickey | Son | — | 14 | ~1926 |
| Lawrence Hickey | Son | — | 11 | ~1929 |
| Lillian Hickey | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Allen, Indiana
Daughter, age 9
Allen, Indiana · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickey |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Allen-County, Indiana
Daughter, age 19
Allen-County, Indiana · implied b. ~1921 — 9 household members
| Surname | Hickey |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Ft Wayne |
| 1935 Residence (County) | Allen |
| Highest Grade | Hs 4 |
| 1935 Residence | Ind |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 19 · b. ~1921 · Indiana
★ You are viewing this record
Sibling
Rosemary Hickey
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hickey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernadine Hickey
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Hickey
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Hickey
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Hickey
Sibling · 1940 · age 11
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 — Allen-County, Indiana
Open full size
1940 US Federal Census — Allen-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01115-00985)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Darlene J Armstrong | 2 | Daughter | — | Michigan |
| 42 | Paul H Armstrong | 36 | Head | Moulder | Ohio |
| 43 | Genevieve Armstrong | 35 | Wife | — | Indiana |
| 44 | Harold Armstrong | 18 | Son | — | Indiana |
| 45 | Blanche Armstrong | 16 | Daughter | — | Indiana |
| 46 | Robert Armstrong | 14 | Son | — | Indiana |
| 47 | Paul Jr Armstrong | 10 | Son | — | Indiana |
| 48 | Alex Mrs. Welch | 43 | Head | — | Ohio |
| 49 | Dorothy Welch | 19 | Daughter | Assembler | Indiana |
| 50 | Doris Lael Welch | 12 | Daughter | — | Indiana |
| 51 | Ronald Tobias | 40 | Head | Machinist | Ohio |
| 52 | Edna Tobias | 31 | Wife | — | Indiana |
| 53 | Garr Tobias | 10 | Son | — | Indiana |
| 54 | Sharon Tobias | 2 | Daughter | — | Indiana |
| 55 | Lawrence Hickey | 47 | Head | Foreman | Ohio |
| 56 | Lillian Hickey | 48 | Wife | — | Indiana |
| 57 | Mary A Hickey THIS PERSON | 19 | Daughter | — | Indiana |
| 58 | Rosemary Hickey | 17 | Daughter | — | Indiana |
| 59 | Joseph Hickey | 14 | Son | — | Indiana |
| 60 | Jane Hickey | 14 | Daughter | — | Indiana |
| 61 | Lawrence Hickey | 11 | Son | — | Indiana |
| 62 | Bernadine Hickey | 7 | Daughter | — | Indiana |
| 63 | Patricia Hickey | 5 | Daughter | — | Indiana |
| 64 | Erwin Rantz | 72 | Head | Chiropractor | Wisconsin |
| 65 | Laura Rantz | 72 | Wife | — | Indiana |
| 66 | Frank Habeker | 72 | Head | — | Indiana |
| 67 | Etta Habeker | 64 | Wife | — | Indiana |
| 68 | Edward Bolinger | 59 | Head | Machinist | Indiana |
| 69 | Emma Bolinger | 55 | Wife | — | Indiana |
| 70 | Fred C Smith | 41 | Head | Truck Driver | Indiana |
| 71 | Onalee Smith | 36 | Wife | — | Michigan |
| 72 | Frederick Smith | 17 | Son | Farm Work | Ohio |
| 73 | Ronald Smith | 16 | Son | Farm Work | Ohio |
| 74 | Willa Smith | 14 | Daughter | — | Indiana |
| 75 | Dallas Smith | 12 | Son | — | Indiana |
| 76 | Fritzie Smith | 5 | Son | — | Indiana |
| 77 | Barton Smith | 2 | Son | — | Indiana |
| 78 | Michael Hogan | 67 | Head | — | Indiana |
| 79 | Mary Hogan | 67 | Wife | — | Indiana |
| 80 | James Mcvey | 55 | Brother-in-law | — | Indiana |
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)