WM
William Mcdermott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Providence-County, Rhode Island
Our Model Tree links this William Mcdermott across the 1930 and 1940 US Censuses in Providence-County, Rhode Island (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 16-person household.
Age 19
b. ~1921
Male
Son
Born: Rhode Island
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Providence-County, Rhode Island |
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Providence City |
| 1935 Residence (County) | Providence |
| Additional Details | |
| Occupation | press hand |
| Industry | jewelry fact |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same house |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Press Hand |
| Township / Ward | Providence City |
| Est. Birth Year | ~1921 |
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.
16 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Leo Mcdermott | Son | — | 7 | ~1933 |
| Robert Mcdermott | Son | — | 18 | ~1922 |
| Alice Mcdermott | Daughter | — | 12 | ~1928 |
| Steven Mcdermott | Son | — | 16 | ~1924 |
| Eugene Mcdermott | Son | — | 10 | ~1930 |
| Thomas Mcdermott | Son | — | 13 | ~1927 |
| Alice Mcdermott | Spouse | — | 41 | ~1899 |
| Raymond Mcdermott | Son | — | 21 | ~1919 |
| Joan Mcdermott | Daughter | — | 3 | ~1937 |
| James Mcdermott | Son | — | 2 | ~1938 |
| William Mcdermott | Son | — | 19 | ~1921 |
| William Mcdermott | Head | — | 43 | ~1897 |
| Patricia Mcdermott | Daughter | — | 5 | ~1935 |
| Mary Mcdermott | Daughter | — | 10 | ~1930 |
| Francis Mcdermott | Son | — | 14 | ~1926 |
| John Mcdermott | Son | — | 19 | ~1921 |
Census Appearances
1930
Providence, Rhode …
Son, age 9
Providence, Rhode Island · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Dermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Rhode Island |
| Mother's Birthplace | Rhode Island |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Providence-County, Rhode …
Son, age 19
Providence-County, Rhode Island · implied b. ~1921 — 16 household members
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Providence City |
| 1935 Residence (County) | Providence |
| Occupation | press hand |
| Industry | jewelry fact |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | Hs 1 |
| 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 William Mcdermott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcdermott
Son · 1940 · age 19 · b. ~1921 · Rhode Island
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Sibling
Mary Mcdermott
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mcdermott
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Mcdermott
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Mcdermott
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcdermott
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mcdermott
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcdermott
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcdermott
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcdermott
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcdermott
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Mcdermott
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Steven Mcdermott
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Mcdermott
Sibling · 1940 · age 7
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 — 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-t0627-03779-00200)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Olive Lamoureux | 34 | Wife | — | Mass. |
| 2 | Ira C. Henderson | 58 | Head | Janitor | Nova Scotia |
| 3 | Julia Henderson | 48 | Wife | — | Nova Scotia |
| 4 | Harold Henderson | 21 | Son | — | Nova Scotia |
| 5 | Mildred Henderson | 13 | Daughter | — | Rhode Island |
| 6 | Robert Henderson | 10 | Son | — | Rhode Island |
| 7 | John Henderson | 1 | Son | — | Rhode Island |
| 8 | Mary Cannon | 78 | Head | — | Eire |
| 9 | William Mcdermott | 43 | Head | Enameler | Rhode Island |
| 10 | Alice Mcdermott | 41 | Wife | — | Mass. |
| 11 | Raymond Mcdermott | 21 | Son | Caster | Rhode Island |
| 12 | John Mcdermott | 19 | Son | Enameler | Rhode Island |
| 13 | William Mcdermott THIS PERSON | 19 | Son | Press Hand | Rhode Island |
| 14 | Robert Mcdermott | 18 | Son | Road Grader | Rhode Island |
| 15 | Steven Mcdermott | 16 | Son | — | Rhode Island |
| 16 | Francis Mcdermott | 14 | Son | — | Rhode Island |
| 17 | Thomas Mcdermott | 13 | Son | — | Rhode Island |
| 18 | Alice Mcdermott | 12 | Daughter | — | Rhode Island |
| 19 | Mary Mcdermott | 10 | Daughter | — | Rhode Island |
| 20 | Eugene Mcdermott | 10 | Son | — | Rhode Island |
| 21 | Leo Mcdermott | 7 | Son | — | Rhode Island |
| 22 | Patricia Mcdermott | 5 | Daughter | — | Rhode Island |
| 23 | Joan Mcdermott | 3 | Daughter | — | Rhode Island |
| 24 | James Mcdermott | 2 | Son | — | Rhode Island |
| 25 | Daniel M. O'Shea | 36 | Head | Policeman | Mass. |
| 26 | Celia O'Shea | 34 | Wife | — | Eire |
| 27 | John O'Shea | 10 | Son | — | Rhode Island |
| 28 | Joan O'Shea | 9 | Daughter | — | Rhode Island |
| 29 | Patricia O'Shea | 7 | Daughter | — | Rhode Island |
| 30 | Donald O'Shea | 6 | Son | — | Rhode Island |
| 31 | Arlene O'Shea | 1 | Daughter | — | Rhode Island |
| 32 | Angelo Trementozzi | 31 | Head | Tank Liner | Rhode Island |
| 33 | Mabel Trementozzi | 39 | Wife | Lens Grinder | Rhode Island |
| 34 | Frederick Trementozzi | 8 | Son | — | Rhode Island |
| 35 | Janet Trementozzi | 5 | Daughter | — | Rhode Island |
| 36 | Alexander Tetreault | 41 | Head | Truck Driver | Mass. |
| 37 | Albina Tetreault | 42 | Wife | Shiner | Mass. |
| 38 | Alice Tetreault | 15 | Daughter | — | Rhode Island |
| 39 | Flora Tetreault | 66 | Mother | — | Canada-French |
| 40 | John Magnuson | 36 | Head | Chauffeur | Sweden |
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)