MC
Mary Connolly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Mary Connolly across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 5-person household.
Age 58
b. ~1882
Female
Head
Born: Ohio
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati City |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cincinnati City |
| Est. Birth Year | ~1882 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Francis Connolly | Son | — | 32 | ~1908 |
| Mary Connolly | Head | — | 58 | ~1882 |
| Anna Hager | Other | — | 54 | ~1886 |
| Mary Connolly | Other | — | 3 | ~1937 |
| Alice Connolly | Daughter | — | 21 | ~1919 |
Census Appearances
1920
Hamilton, Ohio
Head, age 36
Hamilton, Ohio · implied b. ~1884 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Widowed |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Hamilton, Ohio
Head, age 48
Hamilton, Ohio · implied b. ~1882 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Industry | Radio Store |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 20.00 |
| Radio Set | R |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Head, age 58
Hamilton-County, Ohio · implied b. ~1882 — 5 household members
| Surname | Connolly |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati City |
| 1935 Residence (County) | Hamilton |
| Class of Worker | 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 Connolly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Connolly
Head · 1940 · age 58 · b. ~1882 · Ohio
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03188-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Kappes | 76 | Head | President | Indiana |
| 2 | Otillia Kappes | 57 | Wife | — | Ohio |
| 3 | May Bonnie Purdie | 61 | Head | Secretary | Indiana |
| 4 | Walter Garvin | 37 | Head | Reporter | Ohio |
| 5 | Dorothy Garvin | 36 | Wife | — | Wisconsin |
| 6 | Marion Garvin | 14 | Daughter | — | Ohio |
| 7 | Roman Kerdin | 55 | Head | Vice President | Ohio |
| 8 | Rose Kerdin | 54 | Wife | — | Indiana |
| 9 | Jack Kerdin | 23 | Son | Machinist | Ohio |
| 10 | Dorothy Kerdin | 18 | Daughter | — | Ohio |
| 11 | Oscar J. Grossmann | 42 | Head | Meat Cutter | Ohio |
| 12 | Bessie M. Grossmann | 38 | Wife | — | Ohio |
| 13 | Mary C. Lenhard | 62 | Head | — | Maryland |
| 14 | Daisy H. Diehl | 61 | Sister | — | Ohio |
| 15 | Caroline Oehlendorf | 76 | Head | — | Indiana |
| 16 | John O. Muenzenmaier | 73 | Head | — | Germany |
| 17 | Marie Hahn | 37 | Daughter | — | Ohio |
| 18 | Virgil Hahn | 37 | Son-in-law | Cafe Proprietor | Indiana |
| 19 | Kenneth Hahn | 10 | Grandson | — | Ohio |
| 20 | Paul Hahn | 7 | Grandson | — | Ohio |
| 21 | Stella Duker | 52 | Head | Floor Walker | Ohio |
| 22 | Estell Duker | 28 | Daughter | Bookkeeper | Ohio |
| 23 | Henrietta Cox | 24 | Daughter | — | Ohio |
| 24 | Shirley Cox | 3 | Granddaughter | — | Ohio |
| 25 | Jo Ann Cox | 1 | Granddaughter | — | Ohio |
| 26 | Bernard Donovan | 30 | Head | Office Man | England |
| 27 | Vera Donovan | 25 | Wife | — | Ohio |
| 28 | Alphonse Haner | 31 | Boarder | — | Ohio |
| 29 | Victoria Haner | 24 | Boarder | Bill Clerk | New York |
| 30 | Thomas G. Fahey | 40 | Head | Investigator | Ohio |
| 31 | Grace Fahey | 38 | Wife | — | Germany |
| 32 | Patrick Fahey | 12 | Son | — | Ohio |
| 33 | Mary Connolly THIS PERSON | 58 | Head | — | Ohio |
| 34 | Francis Connolly | 32 | Son | Salesman | Ohio |
| 35 | Alice Connolly | 21 | Daughter | — | Ohio |
| 36 | Mary Alice Connolly | 3 | Granddaughter | — | Ohio |
| 37 | Anna Hager | 54 | Sister | Telephone Operator | Ohio |
| 38 | Albert L. Fromme | 54 | Head | Stationary Engineer | Ohio |
| 39 | Ida E. Fromme | 54 | Wife | — | 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)