JD
James Dugan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bucks-County, Pennsylvania
Our Model Tree links this James Dugan across the 1930 and 1940 US Censuses in Bucks-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 10-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bucks-County, Pennsylvania |
| Surname | Dugan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Bucks |
| Additional Details | |
| Occupation | Soap Maker |
| Industry | Soap Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | Hs 2 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Soap Maker |
| Township / Ward | Bristol Borough |
| Est. Birth Year | ~1919 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Daniel Dugan | Head | — | 55 | ~1885 |
| Catherine Dugan | Daughter | — | 13 | ~1927 |
| Helen Dugan | Daughter | — | 17 | ~1923 |
| Bridget Dugan | Spouse | — | 45 | ~1895 |
| James Dugan | Son | — | 21 | ~1919 |
| Anne Dugan | Daughter | — | 7 | ~1933 |
| Rita Dugan | Daughter | — | 15 | ~1925 |
| Daniel Dugan | Son | — | 25 | ~1915 |
| Mary Dugan | Daughter | — | 20 | ~1920 |
| Theresa Dugan | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 10
Philadelphia, Pennsylvania · implied b. ~1920 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dugan |
| Given Name | James |
| 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/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Bucks-County, Pennsylvania
Son, age 21
Bucks-County, Pennsylvania · implied b. ~1919 — 10 household members
| Surname | Dugan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Bucks |
| Occupation | Soap Maker |
| Industry | Soap Works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | Hs 2 |
| 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 James Dugan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Dugan
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
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Sibling
Mary Dugan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Dugan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Dugan
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Dugan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Dugan
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Dugan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Dugan
Sibling · 1940 · 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
1940 US Federal Census — Bucks-County, Pennsylvania
Open full size
1940 US Federal Census — Bucks-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03444-00453)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael Dawns | 7 | Son | — | Pennsylvania |
| 2 | Joseph Dawns | 4 | Son | — | Pennsylvania |
| 3 | William Dougherty | 79 | Head | — | Pennsylvania |
| 4 | James Cavanaugh | 40 | Son-in-law | 40 | New Jersey |
| 5 | Jane Cavanaugh | 38 | Daughter | 0 | Pennsylvania |
| 6 | Joseph Cavanaugh | 5 | Grandson | — | Pennsylvania |
| 7 | Mary Ellen Cavanaugh | 2 | Granddaughter | — | Pennsylvania |
| 8 | Margaret Cavanaugh | 1 | Granddaughter | — | Pennsylvania |
| 9 | Hannah Mullen | 41 | Daughter | Roller | Pennsylvania |
| 10 | Raymond Mullen | 15 | Grandson | Knitter'S Helper | Pennsylvania |
| 11 | Mary Ellen Mullen | 14 | Granddaughter | — | Pennsylvania |
| 12 | Mary Mulhern | 57 | Head | — | Pennsylvania |
| 13 | John Mulhern | 46 | Brother | Case Maker | Pennsylvania |
| 14 | Rose Donnelly | 26 | Sister | Labeler | Pennsylvania |
| 15 | Joseph Donnelly | 7 | Child | — | Pennsylvania |
| 16 | Daniel Dugan | 55 | Head | Chemical Co | Free State Ireland |
| 17 | Bridget Dugan | 45 | Wife | — | Free State Ireland |
| 18 | Daniel Jr Dugan | 25 | Son | Laborer | Pennsylvania |
| 19 | James Dugan THIS PERSON | 21 | Son | Soap Maker | Pennsylvania |
| 20 | Mary Dugan | 20 | Daughter | Soap Packer | Pennsylvania |
| 21 | Helen Dugan | 17 | Daughter | — | Pennsylvania |
| 22 | Rita Dugan | 15 | Daughter | — | Pennsylvania |
| 23 | Catherine Dugan | 13 | Daughter | — | Pennsylvania |
| 24 | Theresa Dugan | 9 | Daughter | — | Pennsylvania |
| 25 | Anne Marie Dugan | 7 | Daughter | — | Pennsylvania |
| 26 | William Martin | 34 | Head | 42 | Pennsylvania |
| 27 | Katherine Martin | 30 | Wife | — | Pennsylvania |
| 28 | James Martin | 2 | Son | — | Pennsylvania |
| 29 | William Martin | 1 | Son | — | Pennsylvania |
| 30 | Thomas Goodnow | 42 | Head | Receiver | Pennsylvania |
| 31 | Anna Goodnow | 38 | Wife | — | Pennsylvania |
| 32 | Thomas Jr Goodnow | 16 | Son | — | Pennsylvania |
| 33 | Kenneth Goodnow | 6 | Son | — | Pennsylvania |
| 34 | James Sweeney | 35 | Head | Mgr Rooming House | Pennsylvania |
| 35 | Joseph Sweeney | 38 | Brother | Operator | Pennsylvania |
| 36 | Harry Lange | 32 | Son-in-law | 80 | Pennsylvania |
| 37 | Anna Lange | 30 | Sister | — | Pennsylvania |
| 38 | Mary Ann Lange | 1 | Niece | — | Pennsylvania |
| 39 | Mark Shatzer | 43 | Head | Card Tender | Maryland |
| 40 | Helen Shatzer | 43 | Wife | Floor Lady | Pennsylvania |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)