MD
Mary Donahue — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Jefferson, Kentucky
Our Model Tree links this Mary Donahue across the 1920 and 1930 US Censuses in Jefferson, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1886), then head of a 9-person household.
Age 34
b. ~1886
Female
Daughter
Born: Kentucky
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Jefferson, Kentucky |
| Surname | Donahue |
| Given Name | Mary L. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Kentucky |
| Additional Details | |
| Occupation | billing clerk |
| Industry | machine shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Billing Clerk |
| Township / Ward | Louisville City |
| Est. Birth Year | ~1886 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Donahue | Daughter | — | 34 | ~1886 |
| Abbie Donahue | Daughter | — | 22 | ~1898 |
| Florence Donahue | Daughter | — | 21 | ~1899 |
| Mary Donahue | Head | — | 57 | ~1863 |
| Robert Donahue | Son | — | 16 | ~1904 |
| James Donahue | Son | — | 32 | ~1888 |
| Cornelius Donahue | Son | — | 27 | ~1893 |
| Charles Donahue | Son | — | 30 | ~1890 |
| John Donahue | Son | — | 18 | ~1902 |
Census Appearances
1920
Jefferson, Kentucky
Daughter, age 34
Jefferson, Kentucky · implied b. ~1886 — 9 household members
| Surname | Donahue |
| Given Name | Mary L. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Kentucky |
| Occupation | billing clerk |
| Industry | machine shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Jefferson, Kentucky
Daughter, age 44
Jefferson, Kentucky · implied b. ~1886 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahoe |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Kentucky |
| Occupation | Seamstress |
| Industry | Clothing Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Donahue across 2 US Census years (1920 and 1930) in Jefferson, Kentucky, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donahue
Daughter · 1920 · age 34 · b. ~1886 · Kentucky
★ You are viewing this record
Sibling
Cornelius Donahue
Sibling · 1920 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Donahue
Sibling · 1920 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Abbie Donahue
Sibling · 1920 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donahue
Sibling · 1920 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Donahue
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Donahue
Sibling · 1920 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Donahue
Sibling · 1920 · age 18
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
1920 US Federal Census — Jefferson, Kentucky
Open full size
1920 US Federal Census — Jefferson, Kentucky
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu582unit:0067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Mcroy | 8 | daughter | — | Kentucky |
| 2 | Henry Mcroy | 35 | son | Laborer | Kentucky |
| 3 | Josephine Mcroy | 35 | wife | None | Kentucky |
| 4 | James Mcroy | 1 | son | None | Kentucky |
| 5 | Martin Jones | 48 | head | Moulder | Kentucky |
| 6 | Katie Jones | 41 | wife | None | Kentucky |
| 7 | Alvey Jones | 21 | son | Car Repairer | Kentucky |
| 8 | Viola Jones | 19 | daughter | Helper | Kentucky |
| 9 | Frank Jones | 45 | brother | None | Kentucky |
| 10 | John Miller | 27 | head | Brakeman | Indiana |
| 11 | Hattie Miller | 20 | wife | None | Indiana |
| 12 | Harry Buckley | 58 | head | Car Tender | Ohio |
| 13 | Katie Buckley | 52 | wife | None | Kentucky |
| 14 | John Buckley | 29 | son | Engineer | Indiana |
| 15 | Harry Buckley | 20 | son | Laborer | Pennsylvania |
| 16 | Sarah Buckley | 18 | daughter | Filler | Pennsylvania |
| 17 | Roder Mckenzie | 33 | head | Brakeman | Kentucky |
| 18 | Ada Mckenzie | 30 | wife | None | Kentucky |
| 19 | Ada Louise Mckenzie | 10 | daughter | None | Kentucky |
| 20 | Virginia Mckenzie | 6 | daughter | None | Kentucky |
| 21 | Dorothy Mckenzie | 4 | daughter | None | Kentucky |
| 22 | Roder Jr. Mckenzie | 1 | son | None | Kentucky |
| 23 | Edward Neuerun | 63 | head | Proprietor | Ireland |
| 24 | Rose Neuerun | 51 | wife | None | Tennessee |
| 25 | Rose M. Neuerun | 21 | daughter | General Office | Kentucky |
| 26 | Mary Donahue | 57 | head | None | Kentucky |
| 27 | Mary L. Donahue THIS PERSON | 34 | daughter | Billing Clerk | Kentucky |
| 28 | James J. Donahue | 32 | son | Machinist | Indiana |
| 29 | Charles J. Donahue | 30 | son | Engineer | Kentucky |
| 30 | Cornelius Donahue | 27 | son | Clerk | Kentucky |
| 31 | Abbie R. Donahue | 22 | daughter | Tailoress | Illinois |
| 32 | Florence J. Donahue | 21 | daughter | Tailoress | Tennessee |
| 33 | John R. Donahue | 18 | son | Clerk | Kentucky |
| 34 | Robert L. Donahue | 16 | son | Clerk | Kentucky |
| 35 | Marie Johnson | 35 | head | Carpenter | Kentucky |
| 36 | Ellen Johnson | 32 | wife | None | Kentucky |
| 37 | Catherine Johnson | 15 | daughter | Stemmer | Kentucky |
| 38 | Ethel May Johnson | 13 | daughter | None | Kentucky |
| 39 | Beatrice Johnson | 11 | daughter | None | Kentucky |
| 40 | Jennie Johnson | 7 | daughter | None | Kentucky |
| 41 | Robert Johnson | 5 | son | None | Kentucky |
| 42 | Howard Johnson | 2 | son | None | Kentucky |
| 43 | Charles Mazzoni | 58 | head | Restaurant | New York |
| 44 | Rose Mazzoni | 43 | wife | None | Kentucky |
| 45 | William Mazzoni | 15 | son | Clerk | Kentucky |
| 46 | Margaret Mazzoni | 12 | daughter | None | Kentucky |
| 47 | Katherine Mazzoni | 6 | daughter | None | Kentucky |
| 48 | George W. Gambrell | 30 | head | Stock Man | Kentucky |
| 49 | Lettie Gambrell | 29 | wife | None | Kentucky |
| 50 | Newman Gambrell | 10 | son | None | Kentucky |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)