MD
Mary Dugan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Norfolk, Massachusetts
Our Model Tree links this Mary Dugan across the 1920 and 1930 US Censuses in Norfolk, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1909), then head of a 14-person household.
Age 11
b. ~1909
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Norfolk, Massachusetts |
| Surname | Dugan |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Weymouth Town |
| Est. Birth Year | ~1909 |
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.
14 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Dugan | Daughter | — | 11 | ~1909 |
| Charles Dugan | Head | — | 41 | ~1879 |
| Rose Dugan | Daughter | — | 6 | ~1914 |
| Michael Dugan | Other | — | 66 | ~1854 |
| Charles Dugan | Son | — | 15 | ~1905 |
| Agnes Dugan | Spouse | — | 37 | ~1883 |
| Edward Dugan | Son | — | 12 | ~1908 |
| Robert Dugan | Son | — | 3 | ~1917 |
| Dorothy Dugan | Daughter | — | 1 | ~1919 |
| Ellen Dugan | Daughter | — | 9 | ~1911 |
| Mary Dugan | Other | — | 28 | ~1892 |
| Daniel Dugan | Son | — | 14 | ~1906 |
| Francis Dugan | Other | — | 37 | ~1883 |
| Joseph Dugan | Son | — | 5 | ~1915 |
Census Appearances
1920
Norfolk, Massachusetts
Daughter, age 11
Norfolk, Massachusetts · implied b. ~1909 — 14 household members
| Surname | Dugan |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Norfolk, Massachusetts
Daughter, age 21
Norfolk, Massachusetts · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 (1920 and 1930) in Norfolk, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dugan
Daughter · 1920 · age 11 · b. ~1909 · Massachusetts
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Sibling
Dorothy Dugan
Sibling · 1920 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Dugan
Sibling · 1920 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Dugan
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Dugan
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Dugan
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Dugan
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Dugan
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Dugan
Sibling · 1920 · 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
1920 US Federal Census — Norfolk, Massachusetts
Open full size
1920 US Federal Census — Norfolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu724unit:0998)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Millard J. Dunbar | 80 | Father | — | Massachusetts |
| 2 | Joseph L. Little | 61 | Head | Conductor | Massachusetts |
| 3 | Harold S. Gould | 28 | Head | Retail Merchant | Maine |
| 4 | Ellen L. Gould | 23 | Wife | — | New York |
| 5 | William D. Gould | 5 | Son | — | Massachusetts |
| 6 | Mary J. Gould | 3 | Daughter | — | Massachusetts |
| 7 | Rose E. Gould | 1 | Daughter | — | Massachusetts |
| 8 | Albert H. Gould | 0 | Son | — | Massachusetts |
| 9 | Andrew J. Johnson | 45 | Lodger | Teamster | Massachusetts |
| 10 | Mary V. Spear | 47 | Mother-in-law | — | Ireland |
| 11 | Ellen Spear | 25 | Lodger | Saleswoman | Massachusetts |
| 12 | Charles A. Spear | 45 | Head | Manager | Massachusetts |
| 13 | Agnes C. Spear | 42 | Wife | — | Massachusetts |
| 14 | Marshall F. Spear | 10 | Son | — | Massachusetts |
| 15 | Rebecca E. Sullivan | 75 | Mother-in-law | — | Massachusetts |
| 16 | James W. Long | 41 | Head | Conductor | Ireland |
| 17 | Mary A. Long | 36 | Wife | — | Ireland |
| 18 | John P. Long | 5 | Son | — | Massachusetts |
| 19 | James W. Jr. Long | 2 | Son | — | Massachusetts |
| 20 | Cassius E. Leonard | 68 | Head | Wool Sorter | Massachusetts |
| 21 | Clara J. Leonard | 62 | Wife | — | New York |
| 22 | Michael Powers | 42 | Boarder | Packing | Ireland |
| 23 | E. Peter Miller | 73 | Head | Retail Merchant | Denmark |
| 24 | Mary Miller | 70 | Wife | — | Sweden |
| 25 | William I. Moran | 55 | Head | Foreman | Massachusetts |
| 26 | Adelaide M. Moran | 55 | Wife | — | Massachusetts |
| 27 | Alice M. Moran | 21 | Daughter | Clerk | Massachusetts |
| 28 | Norman J. Moran | 18 | Son | Salesman | Massachusetts |
| 29 | William H. Sullivan | 37 | Head | Edge Setter | Massachusetts |
| 30 | Mary E. Sullivan | 33 | Wife | — | Massachusetts |
| 31 | John M. D. Sullivan | 13 | Son | — | Massachusetts |
| 32 | Carl F. Sullivan | 12 | Son | — | Massachusetts |
| 33 | Herbert J. Sullivan | 11 | Son | — | Massachusetts |
| 34 | Lawrence O'Leary | 21 | Head | Machine Operator | Massachusetts |
| 35 | Doris O'Leary | 20 | Wife | — | Maine |
| 36 | Elpina O'Leary | 0 | Daughter | — | Massachusetts |
| 37 | Charles J. Dugan | 41 | Head | Machinist Helper | Massachusetts |
| 38 | Agnes L. Dugan | 37 | Wife | Keeper | Massachusetts |
| 39 | Charles J. Jr. Dugan | 15 | Son | Errand Boy | Massachusetts |
| 40 | Daniel J. Dugan | 14 | Son | — | Massachusetts |
| 41 | Edward G. Dugan | 12 | Son | — | Massachusetts |
| 42 | Mary A. Dugan THIS PERSON | 11 | Daughter | — | Massachusetts |
| 43 | Ellen L. Dugan | 9 | Daughter | — | Massachusetts |
| 44 | Rose Ann Dugan | 6 | Daughter | — | Massachusetts |
| 45 | Joseph G. Dugan | 5 | Son | — | Massachusetts |
| 46 | Robert J. Dugan | 3 | Son | — | Massachusetts |
| 47 | Dorothy R. Dugan | 1 | Daughter | — | Massachusetts |
| 48 | Michael Dugan | 66 | Uncle | — | Canada |
| 49 | Francis Dugan | 37 | Brother-in-law | Tailor Shop | Massachusetts |
| 50 | Mary Dugan | 28 | Sister-in-law | — | Massachusetts |
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)