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 Mary & John — first a son (b.~1914), then head of a 5-person household.
Age 6
b. ~1914
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 | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1914 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Donahue | Daughter | — | 2 | ~1918 |
| Veronica Donahue | Daughter | — | 4 | ~1916 |
| John Donahue | Head | — | 27 | ~1893 |
| John Donahue | Son | — | 6 | ~1914 |
| Margaret Donahue | Spouse | — | 26 | ~1894 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1914 — 5 household members
| Surname | Donahue |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 17
Allegheny, Pennsylvania · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahoe |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Fitter |
| Industry | Electrical Mfg. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 26
Allegheny-County, Pennsylvania · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donahoe |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Salesman |
| Industry | Wholesale Grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 840 |
| Highest Grade | Hs 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: mother Mary Donahoe (~0.92 confidence) and father John Donahue (~0.92 confidence) and mother Margaret Donahue (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Donahoe
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
John Donahue
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Margaret Donahue
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Donahue
Son · 1920 · age 6 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Veronica Donahue
Sibling · 1920 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Donahue
Sibling · 1920 · age 2
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:1920:14thcensusofpopu1520unit:0060)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Benjamin Bass | 0 | Son | — | Pennsylvania |
| 2 | Michael Kunk | 52 | Head | Painter | Ohio |
| 3 | Mary Kunk | 50 | Wife | — | Ohio |
| 4 | William Downing | 38 | Head | Salesman | Pennsylvania |
| 5 | Jane Downing | 30 | Wife | — | Pennsylvania |
| 6 | Mary Downing | 10 | Daughter | — | Pennsylvania |
| 7 | Catherine Downing | 7 | Daughter | — | Pennsylvania |
| 8 | Jane Downing | 1 | Daughter | — | Pennsylvania |
| 9 | William Ward | 76 | Father-in-law | Laborer | England |
| 10 | Albert Flemming | 50 | Head | Conductor | New Jersey |
| 11 | Mary Flemming | 40 | Wife | — | Pennsylvania |
| 12 | Margaret Flemming | 25 | Daughter | — | Pennsylvania |
| 13 | Thomas Flemming | 23 | Son | Clerk | Pennsylvania |
| 14 | Frank Flemming | 20 | Son | Tester | Pennsylvania |
| 15 | Mary Flemming | 13 | Daughter | Stenographer | Pennsylvania |
| 16 | Albert Flemming | 12 | Son | — | Pennsylvania |
| 17 | John Greent | 34 | Head | Salesman | Pennsylvania |
| 18 | Mary Greent | 35 | Wife | — | Pennsylvania |
| 19 | Andrew Greent | 8 | Son | — | Pennsylvania |
| 20 | Theresa Greent | 6 | Daughter | — | Pennsylvania |
| 21 | Casper Schmidt | 74 | Head | Laborer | Germany |
| 22 | Theresa Schmidt | 75 | Wife | — | Germany |
| 23 | Fredrick Renaut | 35 | Head | Clerk | Pennsylvania |
| 24 | Maude Renaut | 33 | Wife | — | Pennsylvania |
| 25 | Russell Renaut | 12 | Son | — | Pennsylvania |
| 26 | Lavere Renaut | 10 | Son | — | Pennsylvania |
| 27 | Vincent Renaut | 5 | Son | — | Pennsylvania |
| 28 | Albert Renaut | 0 | Son | — | Pennsylvania |
| 29 | John J. Donahue | 27 | Head | Clerk | Pennsylvania |
| 30 | Margaret Donahue | 26 | Wife | — | Pennsylvania |
| 31 | John Donahue THIS PERSON | 6 | Son | — | Pennsylvania |
| 32 | Veronica Donahue | 4 | Daughter | — | Pennsylvania |
| 33 | Margaret Donahue | 2 | Daughter | — | Pennsylvania |
| 34 | Frank Fink | 65 | Head | Boiler Maker | Pennsylvania |
| 35 | Annie Fink | 52 | Wife | Mail Clerk | Pennsylvania |
| 36 | William Fink | 38 | Brother-in-law | Machinist | Pennsylvania |
| 37 | Morris Levy | 28 | Head | Peddling | Pennsylvania |
| 38 | Tillie Levy | 24 | Wife | — | Russia |
| 39 | Morris Levy | 1 | Son | — | Pennsylvania |
| 40 | Nicholas Fursiel | 32 | Head | Tailor | Hungary |
| 41 | Ellen Fursiel | 30 | Wife | — | Hungary |
| 42 | Yvette Fursiel | 7 | Daughter | — | Pennsylvania |
| 43 | Beatrice Fursiel | 4 | Daughter | — | Pennsylvania |
| 44 | John Brick | 34 | Head | Manufacturer | Vienna |
| 45 | Rose Brick | 28 | Wife | — | Vienna |
| 46 | Sophie Brick | 5 | Daughter | — | Pennsylvania |
| 47 | Dora Brick | 4 | Daughter | — | Pennsylvania |
| 48 | Adeline Brick | 3 | Daughter | — | Pennsylvania |
| 49 | Harry Brick | 0 | Son | — | Ohio |
| 50 | Jacob Kurtz | 28 | Head | Merchant | Austria |
Pedigree Summary
John + 2 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)