MD
Mary Duffy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Providence-County, Rhode Island
Our Model Tree links this Mary Duffy across the 1920, 1930 and 1940 US Censuses in Providence-County, Rhode Island (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 3-person household.
Age 68
b. ~1872
Female
Head
Born: Rhode Island
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Providence-County, Rhode Island |
| Surname | Duffy |
| Given Name | Mary A. (x) |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Providence |
| 1935 Residence (County) | Providence |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Providence |
| Est. Birth Year | ~1872 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lucille Duffy | Daughter | — | 31 | ~1909 |
| Mary Duffy | Head | — | 68 | ~1872 |
| Eugene Duffy | Son | — | 34 | ~1906 |
Census Appearances
1920
Kent, Rhode …
Head, age 48
Kent, Rhode Island · implied b. ~1872 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Mary A. |
| Relationship to Head | head |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Providence, Rhode …
Head, age 58
Providence, Rhode Island · implied b. ~1872 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duffy |
| Given Name | Mary J |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerical work |
| Industry | Press |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | $32 |
| Veteran | R |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Providence-County, Rhode …
Head, age 68
Providence-County, Rhode Island · implied b. ~1872 — 3 household members
| Surname | Duffy |
| Given Name | Mary A. (x) |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Providence |
| 1935 Residence (County) | Providence |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Duffy across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Duffy
Head · 1940 · age 68 · b. ~1872 · Rhode Island
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Providence-County, Rhode Island
Open full size
1940 US Federal Census — Providence-County, Rhode Island
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03775-00009)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kieran (X) Farrelly | 46 | Head | Sergeant | Eire |
| 2 | Catherine J. Farrelly | 43 | Wife | — | Rhode Island |
| 3 | Thomas Farrelly | 7 | Son | — | Rhode Island |
| 4 | Eileen M. Farrelly | 2 | Daughter | — | Rhode Island |
| 5 | Ralph C. Scott | 42 | Head | Teacher | Newfoundland |
| 6 | Anne L. (X) Scott | 45 | Wife | — | Rhode Island |
| 7 | Cornelius F. (X) Murphy | 62 | Head | Secretary | Massachusetts |
| 8 | Anne F. Murphy | 59 | Wife | — | Rhode Island |
| 9 | Cornelius J. O'Shea | 47 | Head | Driver Salesman | Rhode Island |
| 10 | Florence (X) O'Shea | 39 | Wife | — | Rhode Island |
| 11 | Neal F. O'Shea | 9 | Son | — | Rhode Island |
| 12 | Thomas J. Lambert | 47 | Head | Salesman | Michigan |
| 13 | Annie M. Lambert | 46 | Wife | — | Rhode Island |
| 14 | Thomas J. Lambert | 16 | Son | — | Rhode Island |
| 15 | Mary Martin | 71 | Mother-in-law | — | Rhode Island |
| 16 | John Waters | 49 | Head | Letter Carrier | Rhode Island |
| 17 | Gladys Waters | 36 | Sister | — | Rhode Island |
| 18 | George Waters | 31 | Brother | Truck Driver | Rhode Island |
| 19 | Frank J. Higgins | 49 | Brother-in-law | Foreman | Massachusetts |
| 20 | Mary F. (X) Higgins | 44 | Sister | — | Rhode Island |
| 21 | Mary Higgins | 23 | Niece | Stenographer | Rhode Island |
| 22 | Norma Higgins | 21 | Niece | Salesgirl | Rhode Island |
| 23 | Alice Higgins | 19 | Niece | Billing Clerk | Rhode Island |
| 24 | James Higgins | 17 | Nephew | — | Rhode Island |
| 25 | Ellen G. (X) Drury | 54 | Head | — | Rhode Island |
| 26 | Joseph Drury | 18 | Son | — | Rhode Island |
| 27 | Loretta Drury | 15 | Daughter | — | Rhode Island |
| 28 | Loretta L. Fanning | 45 | Sister | Teacher | Rhode Island |
| 29 | Edward H. Hartnett | 34 | Head | Salesman | Rhode Island |
| 30 | Margaret V. (X) Hartnett | 59 | Mother | — | Eire |
| 31 | Mary M. Hartnett | 23 | Sister | Typist | Rhode Island |
| 32 | John A. Hartnett | 20 | Brother | Investigator | Rhode Island |
| 33 | Mary A. (X) Duffy THIS PERSON | 68 | Head | — | Rhode Island |
| 34 | Eugene B. Duffy | 34 | Son | Adjuster | Rhode Island |
| 35 | Lucille Duffy | 31 | Daughter | Teacher | Rhode Island |
| 36 | Ellen Hunt | 56 | Head | Inspector | Rhode Island |
| 37 | Jane Hunt | 49 | Sister | Polisher | Rhode Island |
| 38 | George J. (X) Roberts | 49 | Head | Instructor | Massachusetts |
| 39 | Mildred S. Roberts | 50 | Wife | — | Massachusetts |
| 40 | Pauline Roberts | 16 | Daughter | — | Rhode Island |
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)