JD
John Dugan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this John Dugan across the 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1908), then head of a 7-person household.
Age 12
b. ~1908
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Dugan |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | South Braddock Borough |
| 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.
7 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Regis Dugan | Son | — | 7 | ~1913 |
| John Dugan | Son | — | 12 | ~1908 |
| James Dugan | Son | — | 9 | ~1911 |
| John Dugan | Head | — | 38 | ~1882 |
| Peter Dugan | Son | — | 16 | ~1904 |
| Nellie Dugan | Spouse | — | 38 | ~1882 |
| Helen Dugan | Daughter | — | 3 | ~1917 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 2
Allegheny, Pennsylvania · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dugan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Son, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 7 household members
| Surname | Dugan |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Dugan across 2 US Census years (1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
John Dugan
Son · 1920 · age 12 · b. ~1908 · Pennsylvania
★ You are viewing this record
Sibling
Peter Dugan
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Dugan
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regis Dugan
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Dugan
Sibling · 1920 · age 9
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:1920:14thcensusofpopu1515unit:0949)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Catherine Miller | 40 | wife | None | Austria |
| 52 | Helen Miller | 18 | daughter | Clerk | Pennsylvania |
| 53 | Mary Novak | 19 | Servant | Servant | Austria |
| 54 | Louis Lemoine | 42 | head | Cutsmith | Austria |
| 55 | Sarah Lemoine | 33 | wife | None | Austria |
| 56 | Harry Lemoine | 18 | son | Salesman | New York |
| 57 | Molly Lemoine | 16 | daughter | Sales Lady | New York |
| 58 | Martin Lemoine | 11 | son | None | New York |
| 59 | Maurice Lemoine | 5 | son | None | New York |
| 60 | John Dugan | 38 | head | Pipefitter | Pennsylvania |
| 61 | Nellie Dugan | 38 | wife | None | Pennsylvania |
| 62 | Peter Dugan | 16 | son | Messenger | Pennsylvania |
| 63 | John Dugan THIS PERSON | 12 | son | None | Pennsylvania |
| 64 | James Dugan | 9 | son | None | Pennsylvania |
| 65 | Regis Dugan | 7 | son | None | Pennsylvania |
| 66 | Helen Dugan | 3 | daughter | None | Pennsylvania |
| 67 | Patrick Mangan | 45 | head | Road Master | Pennsylvania |
| 68 | Mary Mangan | 43 | wife | None | Pennsylvania |
| 69 | Daniel Mangan | 25 | son | Mechanic | Pennsylvania |
| 70 | John J Mangan | 23 | son | Puncher | Pennsylvania |
| 71 | Clarence Mangan | 21 | son | Pipefitter | Pennsylvania |
| 72 | Patrick J Mangan | 19 | son | Printer | Pennsylvania |
| 73 | Paul V Mangan | 14 | son | None | Pennsylvania |
| 74 | James D Mangan | 13 | Grand-son | None | Pennsylvania |
| 75 | Catherine Mangan | 12 | Grand-daughter | None | Pennsylvania |
| 76 | Jerome Mangan | 9 | Grand-son | None | Pennsylvania |
| 77 | Grace Mangan | 6 | Grand-daughter | None | Pennsylvania |
| 78 | Mary P Mangan | 2 | Grand-daughter | None | Pennsylvania |
| 79 | John J Done | 45 | head | Moulder | Scotland |
| 80 | Sassie Done | 45 | wife | None | Pennsylvania |
| 81 | James Done | 20 | son | Inspector | Pennsylvania |
| 82 | Doris Done | 7 | daughter | None | Pennsylvania |
| 83 | Agnes E Mcmillen | 74 | head | None | Pennsylvania |
| 84 | William Mcmillen | 54 | son | Laborer | Pennsylvania |
| 85 | Thomas Mcadams | 43 | head | Gardener | Pennsylvania |
| 86 | Otto Mcadams | 25 | son | Driver | Pennsylvania |
| 87 | Henrietta Mcadams | 18 | daughter | House Work | Pennsylvania |
| 88 | John Mcadams | 16 | son | None | Pennsylvania |
| 89 | Lucila Mcadams | 12 | daughter | None | Pennsylvania |
| 90 | Alvena Mcadams | 9 | son | None | Pennsylvania |
| 91 | Ralph Mcadams | 6 | son | None | Pennsylvania |
| 92 | Michael Duke | 65 | head | Laborer | Ireland |
| 93 | Mary Duke | 60 | wife | None | Ireland |
| 94 | Margaret Duke | 32 | daughter | None | Pennsylvania |
| 95 | Mildred Duke | 25 | daughter | None | Pennsylvania |
| 96 | Michael Mullen | 85 | uncle | Stationer | Ireland |
| 97 | Catherine Dunn | 42 | head | None | Ireland |
| 98 | Patrick Dunn | 21 | son | Laborer | Pennsylvania |
| 99 | Margaret Dunn | 18 | daughter | Helper | Pennsylvania |
| 100 | James Dunn | 17 | son | Book Keeper | Pennsylvania |
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)