MD
Mary Duggan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-London-County, Connecticut
Our Model Tree links this Mary Duggan across the 1930 and 1940 US Censuses in New-London-County, Connecticut (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 6-person household.
Age 41
b. ~1899
Female
Spouse
Born: Vermont
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-London-County, Connecticut |
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | New London |
| 1935 Residence (County) | New London |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
| Township / Ward | New London |
| Est. Birth Year | ~1899 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Duggan | Son | — | 16 | ~1924 |
| Richard Duggan | Head | — | 42 | ~1898 |
| Robert Duggan | Son | — | 5 | ~1935 |
| Richard Duggan | Son | — | 18 | ~1922 |
| Mary Duggan | Daughter | — | 16 | ~1924 |
| Mary Duggan | Spouse | — | 41 | ~1899 |
Census Appearances
1930
New London, …
Other, age 31
New London, Connecticut · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duggan |
| Given Name | Mary E. |
| Relationship to Head | wife-H |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Vermont |
| Age at First Marriage | 22 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1940
New-London-County, Connecticut
Spouse, age 41
New-London-County, Connecticut · implied b. ~1899 — 6 household members
| Surname | Duggan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | New London |
| 1935 Residence (County) | New London |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
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 · 1940 · age 41 · b. ~1899 · Connecticut
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — New-London-County, Connecticut
Open full size
1940 US Federal Census — New-London-County, Connecticut
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00524-00198)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Melvin Davis | 37 | Head | Machinist | Connecticut |
| 42 | Gloria Davis | 26 | Wife | — | Massachusetts |
| 43 | Roger L. Harrison | 47 | Head | Printer | Connecticut |
| 44 | Agnes Harrison | 51 | Wife | — | Connecticut |
| 45 | Jennie Sanders | 87 | Mother-in-law | — | Connecticut |
| 46 | Leila Latham | 58 | Head | — | India |
| 47 | William Ward | 20 | Son | Radio Electrician | Connecticut |
| 48 | Philip Ward | 27 | Lodger | Clergyman | Syria |
| 49 | Russel Cluney | 47 | Head | Owner | Massachusetts |
| 50 | Ruth Cluney | 42 | Wife | — | Massachusetts |
| 51 | Thelma Cluney | 20 | Daughter | Waitress | Connecticut |
| 52 | Doris Cluney | 15 | Daughter | — | Connecticut |
| 53 | Marian Cluney | 13 | Daughter | — | Connecticut |
| 54 | Kenneth Dicky | 24 | Head | Painter | Tennessee |
| 55 | Bernice Dicky | 22 | Wife | Typist | Massachusetts |
| 56 | Kenneth Jr. Dicky | 2 | Son | — | West Virginia |
| 57 | Ernest F. Gates | 49 | Head | Letter Carrier | Connecticut |
| 58 | Charlotte M. Gates | 39 | Wife | — | Connecticut |
| 59 | John Gates | 14 | Son | — | Connecticut |
| 60 | Richard Duggan | 42 | Head | Station Master | Vermont |
| 61 | Mary Duggan THIS PERSON | 41 | Wife | — | Vermont |
| 62 | Richard Jr. Duggan | 18 | Son | — | Connecticut |
| 63 | William Duggan | 16 | Son | — | Connecticut |
| 64 | Mary Duggan | 16 | Daughter | — | Connecticut |
| 65 | Robert Duggan | 5 | Son | — | Connecticut |
| 66 | Patrick J. Scanlon | 58 | Head | Retired | Irish Free State |
| 67 | Margaret Scanlon | 57 | Wife | — | Vermont |
| 68 | Loretta Scanlon | 20 | Daughter | — | Connecticut |
| 69 | Margaret Scanlon | 12 | Granddaughter | — | Connecticut |
| 70 | Beverly Scanlon | 5 | Granddaughter | — | Connecticut |
| 71 | James G. Finch | 46 | Head | Machinist | Iowa |
| 72 | Mary Finch | 41 | Wife | — | Connecticut |
| 73 | James C. Finch | 10 | Son | — | Connecticut |
| 74 | Jean D. Finch | 6 | Daughter | — | Connecticut |
| 75 | Alice M. Finch | 3 | Daughter | — | Connecticut |
| 76 | William W. Street | 49 | Head | Ship Corker | Connecticut |
| 77 | Jennie Street | 47 | Wife | — | Connecticut |
| 78 | Ruth Street | 24 | Daughter | Clerical | Connecticut |
| 79 | William T. Street | 18 | Son | — | Maine |
| 80 | Bernard Street | 11 | Son | — | Maine |
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)