MH
Mary Hennessy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Hamilton, Ohio
Our Model Tree links this Mary Hennessy across the 1920 and 1930 US Censuses in Hamilton, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 10-person household.
Age 13
b. ~1917
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Hamilton, Ohio |
| Surname | Hennessy |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cincinnati City |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Charles Hennessy | Son | — | 10 | ~1920 |
| Thomas Hennessy | Son | — | 14 | ~1916 |
| Julia Drummy | Other | — | 32 | ~1898 |
| Mary Hennessy | Daughter | — | 13 | ~1917 |
| Bernard Hennessy | Son | — | 5 | ~1925 |
| Mary Hennessy | Other | — | 39 | ~1891 |
| John Hennessy | Son | — | 12 | ~1918 |
| Francis Hennessy | Son | — | 8 | ~1922 |
| Thomas Hennessy | Head | — | 44 | ~1886 |
| Charles Drummy | Other | — | 40 | ~1890 |
Census Appearances
1920
Hamilton, Ohio
Daughter, age 3
Hamilton, Ohio · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessey |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Hamilton, Ohio
Daughter, age 13
Hamilton, Ohio · implied b. ~1917 — 10 household members
| Surname | Hennessy |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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 |
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 Hennessy across 2 US Census years (1920 and 1930) in Hamilton, Ohio, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hennessy
Daughter · 1930 · age 13 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
John Hennessy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Hennessy
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Hennessy
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Hennessy
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Hennessy
Sibling · 1930 · age 8
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
1930 US Federal Census — Hamilton, Ohio
Open full size
1930 US Federal Census — Hamilton, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1810:0177)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John C Hill | 57 | Head | Salesman | Kentucky |
| 2 | Amelia Hill | 43 | Wife-H | — | Ohio |
| 3 | Sue A Hill | 78 | Mother | — | Kentucky |
| 4 | Matilda Shea | 52 | Head-H | Bookkeeper | Ohio |
| 5 | Henry Shea | 32 | Son | Designer | Ohio |
| 6 | Charles Wissmann | 57 | Head | Salesman | Germany |
| 7 | Carrie Wissmann | 53 | Wife-H | — | Ohio |
| 8 | — | None | — | — | — |
| 9 | Clifford Damilo | 23 | Head | Clerk | Kentucky |
| 10 | Marian Damilo | 20 | Wife-H | Bookkeeper | Ohio |
| 11 | James Fitzgerald | 55 | Father-in-law | Electrician | Ohio |
| 12 | William Bueldean | 45 | Head | Plater | Ohio |
| 13 | Dora Bueldean | 44 | Wife-H | — | Ohio |
| 14 | Mary Love | 52 | Head-H | — | Ohio |
| 15 | Mildred Love | 31 | Daughter | Nurse | Ohio |
| 16 | Perry Love | 25 | Son | Embalmer | Ohio |
| 17 | Oscar J. Staudenberger | 45 | Head | Manager | Ohio |
| 18 | Ethel Staudenberger | 40 | Wife-H | — | Ohio |
| 19 | Edward Miller | 25 | Boarder | Rail Roader | Iowa |
| 20 | — | None | — | — | — |
| 21 | Emma Gaskins | 53 | Head-H | — | Ohio |
| 22 | Mary J Naish | 82 | Mother | — | Ohio |
| 23 | Stanley Gaskins | 29 | Son | Manager | Ohio |
| 24 | Mae Naish | 56 | Sister | Operator | Ohio |
| 25 | Edward L Evans | 57 | Head | Carpenter | Ohio |
| 26 | Esther S Evans | 57 | Wife-H | — | Ohio |
| 27 | Anna M Evans | 17 | Daughter | — | Ohio |
| 28 | William J Phillips | 66 | Head | Stone Mason | Wales England |
| 29 | Emma J Phillips | 64 | Wife-H | — | Kentucky |
| 30 | Jane Jones | 69 | Sister-in-law | — | Kentucky |
| 31 | Thomas J Hennessy | 44 | Head | Electrician | Ohio |
| 32 | Mary F Hennessy | 39 | Wife-H | — | Ohio |
| 33 | Thomas Hennessy | 14 | Son | — | Ohio |
| 34 | Mary L Hennessy THIS PERSON | 13 | Daughter | — | Ohio |
| 35 | John Hennessy | 12 | Son | — | Ohio |
| 36 | Charles Hennessy | 10 | Son | — | Ohio |
| 37 | Francis Hennessy | 8 | Son | — | Ohio |
| 38 | Bernard Hennessy | 5 | Son | — | Ohio |
| 39 | Charles Drummy | 40 | Brother-in-law | Operator | Ohio |
| 40 | Julia S Drummy | 32 | Sister-in-law | Bookkeeper | Kentucky |
| 41 | William Brown | 40 | Head | — | Ohio |
| 42 | Helen Brown | 38 | Sister | Buyer | Ohio |
| 43 | Edward Schoettinger | 58 | Head | District Inspector | Ohio |
| 44 | Theresa Schoettinger | 56 | Wife-H | — | Ohio |
| 45 | Elizabeth Hutchinson | 43 | Head-H | Saleslady | Kentucky |
| 46 | Edith Hutchinson | 22 | Daughter | Secretary | Ohio |
| 47 | Louis Stock | 34 | Head | Assistant | Ohio |
| 48 | Barbara Stock | 36 | Wife-H | — | Ohio |
| 49 | Vera Stock | 14 | Daughter | — | Ohio |
| 50 | Marvin Stock | 6 | Son | — | Ohio |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)