MD
Mary Duggan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Duggan across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 9-person household.
Age 52
b. ~1878
Female
Spouse
Born: Irish Free State
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1892 |
| Age at First Marriage | 23 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birthplace (normalized) | irish free state |
| Township / Ward | Natick Town Part Of |
| Est. Birth Year | ~1878 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Everett Duggan | Son | — | 25 | ~1905 |
| Mary Duggan | Spouse | — | 52 | ~1878 |
| Henry Duggan | Son | — | 28 | ~1902 |
| Francis Duggan | Son | — | 19 | ~1911 |
| Richard Duggan | Son | — | 26 | ~1904 |
| Florence Duggan | Daughter | — | 23 | ~1907 |
| Daniel Duggan | Head | — | 56 | ~1874 |
| Joseph Duggan | Son | — | 22 | ~1908 |
| Arthur Duggan | Son | — | 15 | ~1915 |
Census Appearances
1930
Middlesex, Massachusetts
Spouse, age 52
Middlesex, Massachusetts · implied b. ~1878 — 9 household members
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1892 |
| Age at First Marriage | 23 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birthplace (normalized) | irish free state |
1940
Middlesex-County, Massachusetts
Spouse, age 65
Middlesex-County, Massachusetts · implied b. ~1875 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dugan |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Acton Town |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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 Duggan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Duggan
Spouse · 1930 · age 52 · b. ~1878 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Middlesex, Massachusetts
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1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel925:0547)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George Klein | 18 | Son | Dairyman | New York |
| 52 | Ernestine Klein | 17 | Daughter | — | New York |
| 53 | David Smith | 47 | Head | Plumber | Scotland |
| 54 | Mary Smith | 48 | Wife | — | Scotland |
| 55 | Lida Smith | 20 | Daughter | Office Clerk | Massachusetts |
| 56 | Napoleon Touff | 52 | Head | Stock Clerk | Massachusetts |
| 57 | Margaret Touff | 56 | Wife | — | Massachusetts |
| 58 | Thomas Touff | 24 | Son | Clerk | Massachusetts |
| 59 | Lawrence Touff | 19 | Son | Gardener | Massachusetts |
| 60 | Thomas Taggart | 65 | Head | Carpenter | New Hampshire |
| 61 | Mary Taggart | 62 | Wife | — | New York |
| 62 | Hazel Baudet | 38 | Daughter | Housemaid | New Hampshire |
| 63 | Thelma Baudet | 11 | Granddaughter | — | New Hampshire |
| 64 | Joseph Lucey | 62 | Head | Truck Driver | Massachusetts |
| 65 | Lena Lucey | 57 | Wife | — | Germany |
| 66 | James Mccarthy | 32 | Head | Farmer | Massachusetts |
| 67 | Adelyne Mccarthy | 24 | Wife | — | Massachusetts |
| 68 | James Jr. Mccarthy | 8 | Son | — | Massachusetts |
| 69 | John Mccarthy | 6 | Son | — | Massachusetts |
| 70 | Emma Mccarthy | 3 | Daughter | — | Massachusetts |
| 71 | Joseph Mccarthy | 1 | Son | — | Massachusetts |
| 72 | Lyman Lucey | 23 | Cousin | Laborer | Massachusetts |
| 73 | George Baker | 42 | Head | Laborer | Canada English |
| 74 | Effa Baker | 39 | Wife | Housemaid | Canada English |
| 75 | Stuart Baker | 17 | Son | Laborer | Canada English |
| 76 | George Jr. Baker | 15 | Son | Cowboy | Canada English |
| 77 | William Lowe | 26 | Head | Mechanic | Massachusetts |
| 78 | Mildred Lowe | 25 | Wife | — | Canada English |
| 79 | Robert Lowe | 2 | Son | — | Massachusetts |
| 80 | Daniel Duggan | 56 | Head | Laborer | Irish Free State |
| 81 | Mary Duggan THIS PERSON | 52 | Wife | — | Irish Free State |
| 82 | Henry Duggan | 28 | Son | Merchant | Massachusetts |
| 83 | Richard R. Duggan | 26 | Son | Truck Driver | Massachusetts |
| 84 | Everett Duggan | 25 | Son | Collector | Massachusetts |
| 85 | Florence Duggan | 23 | Daughter | Bookkeeper | Massachusetts |
| 86 | Joseph Duggan | 22 | Son | Clerk | Massachusetts |
| 87 | Francis Duggan | 19 | Son | — | Massachusetts |
| 88 | Arthur Duggan | 15 | Son | — | Massachusetts |
| 89 | Thomas Tobin | 69 | Head | — | Massachusetts |
| 90 | Ellen Tobin | 66 | Wife | — | Irish Free State |
| 91 | Jane Tobin | 38 | Daughter | Teacher | Massachusetts |
| 92 | Joseph Finn | 49 | Head | Manager | Massachusetts |
| 93 | Jessie Finn | 58 | Sister | — | Massachusetts |
| 94 | David Finn | 58 | Brother-in-law | Proprietor | Massachusetts |
| 95 | Jessie Finn | 36 | Niece | Waitress | Massachusetts |
| 96 | Anthony Finn | 36 | Nephew | Painter | Massachusetts |
| 97 | Louise Finn | 3 | Grandniece | — | Massachusetts |
| 98 | James Riley | 49 | Head | Laborer | Irish Free State |
| 99 | Annie Riley | 42 | Wife | — | England |
| 100 | James Jr. Riley | 18 | Son | — | Massachusetts |
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)