JD
John Donahue — 1920 US Census Record
Model Tree available1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this John Donahue across the 1920, 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Timothy & Daniel — first a son (b.~1910), then head of a 7-person household.
Age 10
b. ~1910
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Donahue |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Penn Township |
| Est. Birth Year | ~1910 |
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.
7 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Donahue | Daughter | — | 14 | ~1906 |
| Daniel Donahue | Head | — | 40 | ~1880 |
| Thomas Donahue | Son | — | 4 | ~1916 |
| John Donahue | Son | — | 10 | ~1910 |
| James Donahue | Son | — | 8 | ~1912 |
| Daniel Donahue | Son | — | 12 | ~1908 |
| Mary Donahue | Spouse | — | 38 | ~1882 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 10
Allegheny, Pennsylvania · implied b. ~1910 — 7 household members
| Surname | Donahue |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 20
Allegheny, Pennsylvania · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahoe |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Salesman |
| Industry | Grocery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
Head, age 31
Allegheny-County, Pennsylvania · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donohue |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | finisher |
| Industry | Electrical Work |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 John Donahue across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Timothy Donahoe (~0.92 confidence) and father Daniel Donahue (~0.92 confidence) and mother Mary Donahue (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Timothy Donahoe
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Daniel Donahue
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mary Donahue
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Donahue
Son · 1920 · age 10 · b. ~1910 · Pennsylvania
★ You are viewing this record
Sibling
Mary Donahue
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Donahue
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donahue
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Donahue
Sibling · 1920 · age 4
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 — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1516unit:0716)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Charles Heckert | 21 | Son | — | Pennsylvania |
| 52 | Arthur Heckert | 18 | Son | — | Pennsylvania |
| 53 | Gustave Hasse | 51 | Head | Manager | Switzerland |
| 54 | Mary Hasse | 42 | Wife | — | Switzerland |
| 55 | Amelia Hasse | 18 | Daughter | Stenographer | Pennsylvania |
| 56 | Emma Hasse | 16 | Daughter | Stenographer | Pennsylvania |
| 57 | Albert Hasse | 12 | Son | — | Pennsylvania |
| 58 | Bertha B Hasse | 10 | Daughter | — | Pennsylvania |
| 59 | Patrick M O'Donnell | 40 | Head | Machinist | Pennsylvania |
| 60 | Mary A O'Donnell | 38 | Wife | — | Pennsylvania |
| 61 | Earl H O'Donnell | 15 | Son | Laborer | Pennsylvania |
| 62 | Richard L O'Donnell | 13 | Son | — | Pennsylvania |
| 63 | William J O'Donnell | 11 | Son | — | Pennsylvania |
| 64 | Agnes O'Donnell | 8 | Daughter | — | Pennsylvania |
| 65 | Dorothy R O'Donnell | 1 | Daughter | — | Pennsylvania |
| 66 | Daniel Donahue | 40 | Head | — | Pennsylvania |
| 67 | Mary Donahue | 38 | Wife | — | Pennsylvania |
| 68 | Mary Donahue | 14 | Daughter | — | Pennsylvania |
| 69 | Daniel Donahue | 12 | Son | — | Pennsylvania |
| 70 | John Donahue THIS PERSON | 10 | Son | — | Pennsylvania |
| 71 | James Donahue | 8 | Son | — | Pennsylvania |
| 72 | Thomas Donahue | 4 | Son | — | Pennsylvania |
| 73 | John Carroll | 52 | Head | Manager | Ireland |
| 74 | Mary Carroll | 50 | Wife | — | Pennsylvania |
| 75 | Elizabeth Carroll | 18 | Daughter | — | Pennsylvania |
| 76 | John Carroll | 15 | Son | — | Pennsylvania |
| 77 | Robert Henderson | 35 | Head | Machine Worker | Pennsylvania |
| 78 | Mabel Henderson | 34 | Wife | — | Pennsylvania |
| 79 | Mildred Henderson | 7 | Daughter | — | Pennsylvania |
| 80 | Cornelius Quill | 34 | Head | Painter | Scotland |
| 81 | Mary Quill | 34 | Wife | — | Ireland |
| 82 | John Quill | 4 | Son | — | Pennsylvania |
| 83 | William Winkelman | 33 | Head | Machinist | Germany |
| 84 | Anna M Winkelman | 32 | Wife | — | Germany |
| 85 | George Winkelman | 7 | Son | — | Pennsylvania |
| 86 | Anna Winkelman | 5 | Daughter | — | Pennsylvania |
| 87 | William Winkelman | 2 | Son | — | Pennsylvania |
| 88 | James Long | 45 | Head | Inspector | Pennsylvania |
| 89 | Jane Long | 45 | Wife | — | Pennsylvania |
| 90 | John Long | 22 | Son | Machinist | Pennsylvania |
| 91 | James Long | 17 | Son | Operator | Pennsylvania |
| 92 | William Long | 22 | Son | Fireman | Pennsylvania |
| 93 | Jean Long | 20 | Son | Warehouseman | Pennsylvania |
| 94 | Hilda Long | 18 | Daughter | Saleslady | Pennsylvania |
| 95 | Theodore Long | 17 | Son | — | Pennsylvania |
| 96 | Margaret Long | 11 | Daughter | — | Pennsylvania |
| 97 | Thomas Hoolahan | 38 | Head | Helper | Ireland |
| 98 | Josephine Hoolahan | 35 | Wife | — | Germany |
| 99 | Theodore Hoolahan | 13 | Son | — | West Virginia |
| 100 | Irene Hoolahan | 11 | Daughter | — | West Virginia |
Related Census Records
Pedigree Summary
John + 4 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)