MC
Mary Callahan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Campbell, Kentucky
Our Model Tree links this Mary Callahan across the 1910, 1920 and 1930 US Censuses in Campbell, Kentucky (XGBoost, ~Confirmed), with identified parents John & Margaret — first a daughter (b.~1908), then head of a 8-person household.
Age 22
b. ~1908
Female
Daughter
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Campbell, Kentucky |
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Occupation | Clerk |
| Industry | Western Union |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Clerk |
| Township / Ward | Bellevue 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Callahan | Daughter | — | 22 | ~1908 |
| John Callahan | Head | — | 48 | ~1882 |
| Margaret Callahan | Other | — | 46 | ~1884 |
| Paul Callahan | Son | — | 19 | ~1911 |
| Richard Callahan | Son | — | 20 | ~1910 |
| Lawrence Callahan | Son | — | 16 | ~1914 |
| Joseph Callahan | Son | — | 23 | ~1907 |
| John Callahan | Son | — | 24 | ~1906 |
Census Appearances
1910
Campbell, Kentucky
Daughter, age 3
Campbell, Kentucky · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1920
Campbell, Kentucky
Daughter, age 13
Campbell, Kentucky · implied b. ~1907 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Campbell, Kentucky
Daughter, age 22
Campbell, Kentucky · implied b. ~1908 — 8 household members
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | Clerk |
| Industry | Western Union |
| Class of Worker | W |
| 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 Callahan across 3 US Census years (1910, 1920 and 1930) in Campbell, Kentucky, using XGBoost record linkage. Identified parents: father John Callahan (~0.92 confidence) and mother Margaret Callahan (~0.92 confidence) and mother Margaret Callahan (~0.92 confidence) and father John Callahan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Callahan
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Margaret Callahan
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Margaret Callahan
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
John Callahan
b. ~1882
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Callahan
Daughter · 1930 · age 22 · b. ~1908 · Kentucky
★ You are viewing this record
Sibling
Paul Callahan
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Callahan
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Callahan
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Callahan
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Callahan
Sibling · 1930 · age 23
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 — Campbell, Kentucky
Open full size
1930 US Federal Census — Campbell, Kentucky
Page Contents
50 people indexed on this census page (ia:1930:kentuckycensus00reel738:0201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth D Morris | 19 | Daughter | — | Tennessee |
| 2 | Theodore Morris | 50 | Head | Sheet Metal Wk | Kentucky |
| 3 | Minnie Morris | 52 | Sister | — | Kentucky |
| 4 | Thomas Baas | 54 | Head | Packer | Kentucky |
| 5 | Emma B Baas | 57 | Wife-H | — | Pennsylvania |
| 6 | Laura B Barker | 29 | Daughter | Saleswoman | Illinois |
| 7 | Emil Radel | 50 | Head | Laborer | Ohio |
| 8 | Minnie Radel | 49 | Wife-H | — | Ohio |
| 9 | Frederick Stratemeyer | 47 | Head | Paper Cutter | Ohio |
| 10 | Josephine Stratemeyer | 45 | Wife-H | — | Ohio |
| 11 | Wesley Stratemeyer | 21 | Head | Painter | Kentucky |
| 12 | Alfreda Stratemeyer | 19 | Wife | — | Ohio |
| 13 | John Blakley | 66 | Head | Night Watchman | Ohio |
| 14 | Annie Blakley | 59 | Wife-H | — | Germany |
| 15 | John Blakley | 30 | Son | Linotyper | Ohio |
| 16 | William Blakley | 20 | Son | Metal Worker | Kentucky |
| 17 | William Listerman | 53 | Head | Stock Keeper | Kentucky |
| 18 | Magdalen Listerman | 49 | Wife-H | — | Ohio |
| 19 | William A Listerman | 28 | Son | — | Kentucky |
| 20 | Mary A Listerman | 25 | Daughter | — | Kentucky |
| 21 | Ellsworth Listerman | 19 | Son | Office Helper | Kentucky |
| 22 | Margaret Listerman | 6 | Daughter | — | Kentucky |
| 23 | Joseph Sturm | 33 | Head | Electrician | Kentucky |
| 24 | Marie Sturm | 29 | Wife-H | — | Kentucky |
| 25 | Donald Sturm | 4 | Son | — | Kentucky |
| 26 | Marion Sturm | 3 | Daughter | — | Ohio |
| 27 | John B Callahan | 48 | Head | Designer | Ohio |
| 28 | Margaret Callahan | 46 | Wife-H | — | Indiana |
| 29 | John J Callahan | 24 | Son | Clerk | Ohio |
| 30 | Joseph Callahan | 23 | Son | Salesman | Ohio |
| 31 | Richard Callahan | 20 | Son | Electrician | Ohio |
| 32 | Mary Callahan THIS PERSON | 22 | Daughter | Clerk | Ohio |
| 33 | Paul Callahan | 19 | Son | Shipping Clerk | Ohio |
| 34 | Lawrence Callahan | 16 | Son | — | Kentucky |
| 35 | William J Ryan | 58 | Head | Floor Man | Ohio |
| 36 | Catherine Ryan | 53 | Wife-H | — | Kentucky |
| 37 | Ella M Ryan | 24 | Daughter | Stenographer | Kentucky |
| 38 | Margaret Ryan | 22 | Daughter | Stenographer | Kentucky |
| 39 | Theodore Andres | 34 | Head | Linotype Operator | Ohio |
| 40 | Alice Andres | 27 | Wife | — | Indiana |
| 41 | Louis T Robute | 51 | Head | Superviser | Ohio |
| 42 | Lillian M Robute | 46 | Wife-H | — | Kentucky |
| 43 | Louis Robute | 21 | Son | Clerk | Kentucky |
| 44 | Jessie Jenkins | 46 | Head | Saleswoman | Ohio |
| 45 | Bernard Jenkins | 10 | Son | — | West Virginia |
| 46 | Herbert Grossmeyer | 27 | Head | Clerk | Kentucky |
| 47 | Eunice M Grossmeyer | 25 | Wife-H | — | Minnesota |
| 48 | Paul B Graham | 51 | Head | — | Ohio |
| 49 | Lillian M Graham | 48 | Wife-H | — | Ohio |
| 50 | Thomas R Gormley | 10 | Nephew | — | Kentucky |
Related Census Records
Pedigree Summary
Mary + 5 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)