JD
John Dugan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Dugan across the 1930 and 1940 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 9-person household.
Age 4
b. ~1926
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Dugan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| 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 | Philadelphia City |
| Est. Birth Year | ~1926 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Dugan | Son | — | 4 | ~1926 |
| Marguerite Dugan | Daughter | — | 15 | ~1915 |
| Dorothy Dugan | Daughter | — | 11 | ~1919 |
| Alice Dugan | Daughter | — | 14 | ~1916 |
| Alice Dugan | Spouse | — | 35 | ~1895 |
| Eugene Dugan | Head | — | 39 | ~1891 |
| Robert Dugan | Son | — | 2 | ~1928 |
| Charles Dugan | Son | — | 8 | ~1922 |
| Eugene Dugan | Son | — | 17 | ~1913 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 4
Philadelphia, Pennsylvania · implied b. ~1926 — 9 household members
| Surname | Dugan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 14
Philadelphia-County, Pennsylvania · implied b. ~1926 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dougan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | PHILADELPHIA |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 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 Dugan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Dugan
Son · 1930 · age 4 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Dorothy Dugan
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Dugan
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite Dugan
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Dugan
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Dugan
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Dugan
Sibling · 1930 · age 17
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 — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2103:0312)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Connelly | 62 | Head | Watchman | Pennsylvania |
| 52 | Elizabeth Connelly | 62 | Wife | Homemaker | Pennsylvania |
| 53 | Basil L. Brooks | 63 | Head | Engineer | Pennsylvania |
| 54 | Birdella Brooks | 59 | Wife | Homemaker | Pennsylvania |
| 55 | Angelo Billano | 34 | Head | Mill Hand | Italy |
| 56 | Minnie Billano | 35 | Wife | Homemaker | Italy |
| 57 | Sylvia Billano | 14 | Daughter | — | Pennsylvania |
| 58 | Cyril Billano | 11 | Son | — | Pennsylvania |
| 59 | Florence Billano | 12 | Daughter | — | Pennsylvania |
| 60 | Eugene Dugan | 39 | Head | Laborer | Pennsylvania |
| 61 | Alice Dugan | 35 | Wife | Homemaker | Pennsylvania |
| 62 | Eugene Jr. Dugan | 17 | Son | Laborer | Pennsylvania |
| 63 | Marguerite Dugan | 15 | Daughter | — | Pennsylvania |
| 64 | Alice Dugan | 14 | Daughter | — | Pennsylvania |
| 65 | Dorothy Dugan | 11 | Daughter | — | Pennsylvania |
| 66 | Charles Dugan | 8 | Son | — | Pennsylvania |
| 67 | John Dugan THIS PERSON | 4 | Son | — | Pennsylvania |
| 68 | Robert Dugan | 2 | Son | — | Pennsylvania |
| 69 | John H. Hammes | 59 | Head | Laborer | Pennsylvania |
| 70 | Bertha Hammes | 59 | Wife | Homemaker | Pennsylvania |
| 71 | Catherine Hammes | 39 | Daughter | Knitter | Pennsylvania |
| 72 | Marian E. Hammes | 31 | Daughter | Folder | Pennsylvania |
| 73 | Louis E. Hammes | 27 | Son | Elevator Operator | Pennsylvania |
| 74 | Louis Chernoch | 45 | Head | Proprietor | Russia |
| 75 | Elizabeth Chernoch | 33 | Wife | — | Russia |
| 76 | Louis Chernoch | 9 | Son | — | Pennsylvania |
| 77 | Harry Chernoch | 4 | Son | — | Pennsylvania |
| 78 | Bessie Chernoch | 2 | Daughter | — | Pennsylvania |
| 79 | Miriam Chernoch | 1 | Daughter | — | Pennsylvania |
| 80 | Harry B. Craven | 58 | Head | Proprietor | Pennsylvania |
| 81 | Mary E. Craven | 58 | Wife | Homemaker | Pennsylvania |
| 82 | William R. Craven | 31 | Son | Bookkeeper | Pennsylvania |
| 83 | William Harrison | 49 | Head | Fireman | Maryland |
| 84 | Mary Harrison | 47 | Wife | Homemaker | Pennsylvania |
| 85 | Delphine Albany | 18 | Boarder | Saleslady | Pennsylvania |
| 86 | John Connelly | 58 | Boarder | Laborer | Ireland |
| 87 | — | None | — | — | — |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)