MD
Mary Dugan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clark-County, Ohio
Our Model Tree links this Mary Dugan across the 1930 and 1940 US Censuses in Clark-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clark-County, Ohio |
| Surname | Dugan |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Clark |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Springfield City |
| Est. Birth Year | ~1927 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Paul Dugan | Son | — | 16 | ~1924 |
| Catherine Dugan | Daughter | — | 5 | ~1935 |
| Margaret Dugan | Daughter | — | 17 | ~1923 |
| James Dugan | Head | — | 45 | ~1895 |
| Mary Dugan | Daughter | — | 13 | ~1927 |
| Margaret Dugan | Spouse | — | 44 | ~1896 |
| Angela Dugan | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Clark, Ohio
Daughter, age 2
Clark, Ohio · implied b. ~1928 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dugan |
| Given Name | Martha J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Clark-County, Ohio
Daughter, age 13
Clark-County, Ohio · implied b. ~1927 — 7 household members
| Surname | Dugan |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Clark |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Mary Dugan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dugan
Daughter · 1940 · age 13 · b. ~1927 · Ohio
★ You are viewing this record
Sibling
Paul Dugan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Dugan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Angela Dugan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Dugan
Sibling · 1940 · age 5
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 — Clark-County, Ohio
Open full size
1940 US Federal Census — Clark-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03039-00528)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James J. Dugan | 45 | Head | Linotyper | Ohio |
| 2 | Margaret Dugan | 44 | Wife | — | Ohio |
| 3 | Margaret Dugan | 17 | Daughter | — | Ohio |
| 4 | Paul J. Dugan | 16 | Son | — | Ohio |
| 5 | Mary M. Dugan THIS PERSON | 13 | Daughter | — | Ohio |
| 6 | Angela M. Dugan | 10 | Daughter | — | Ohio |
| 7 | Catherine A. Dugan | 5 | Daughter | — | Ohio |
| 8 | Lee Benson | 76 | Head | — | West Virginia |
| 9 | Maude E. Benson | 63 | Wife | — | West Virginia |
| 10 | L. Edith | 36 | Daughter | Clerk | Ohio |
| 11 | Emerson W. Ellars | 37 | Head | Barber | Ohio |
| 12 | Wilma W. Ellars | 34 | Wife | — | Ohio |
| 13 | Paul A. Ellars | 9 | Son | — | Ohio |
| 14 | Henry A. Boerger | 47 | Head | Manager | Ohio |
| 15 | Mildred A. Boerger | 39 | Wife | — | Ohio |
| 16 | Marita Boerger | 18 | Daughter | Clerk | Ohio |
| 17 | Henry E. Boerger | 16 | Son | — | Ohio |
| 18 | Bruce S. Mcmahon | 42 | Head | Salesman | Ohio |
| 19 | Elizabeth P. Mcmahon | 37 | Wife | — | Ohio |
| 20 | Richard Mcmahon | 16 | Son | — | Ohio |
| 21 | Nancy L. Mcmahon | 13 | Daughter | — | Ohio |
| 22 | Roger A. Mcmahon | 7 | Son | — | Ohio |
| 23 | Walter J. Weaver | 32 | Head | Mail Man | Ohio |
| 24 | Irene S. Weaver | 35 | Wife | Assembler | Ohio |
| 25 | Mary O. Donohue | 14 | Stepdaughter | Waitress | Ohio |
| 26 | Robert J. Donohue | 12 | Stepson | — | Ohio |
| 27 | Catherine Tierney | 74 | Head | — | Ireland |
| 28 | Thomas J. Tierney | 35 | Son | Assembler | Ohio |
| 29 | Ellen J. Tierney | 30 | Daughter | Clerk | Ohio |
| 30 | Elizabeth M. Barcafer | 33 | Daughter | — | Ohio |
| 31 | Wyland S. Barcafer | 12 | Son | — | Ohio |
| 32 | M. Fern Frame | 47 | Head | — | Ohio |
| 33 | Margould Frame | 20 | Daughter | New Worker | Ohio |
| 34 | W. Robert Plant | 32 | Head | Press Helper | Ohio |
| 35 | Eleanor R. Plant | 29 | Wife | — | Illinois |
| 36 | Augusta Anderson | 53 | Mother-in-law | — | Wisconsin |
| 37 | — | None | — | — | — |
| 38 | — | None | — | — | — |
| 39 | Albert E. Brown | 32 | Head | Tester | Ohio |
| 40 | Berta A. Brown | 31 | Wife | — | Ohio |
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)