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John Mcdermott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Mcdermott across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 9-person household.
Age 52
b. ~1888
Male
Head
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | McDermott |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Candy Maker |
| Industry | Candy Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1352 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birthplace (normalized) | irish free state |
| Occupation | Candy Maker |
| Township / Ward | Boston |
| Est. Birth Year | ~1888 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anna Mcdermott | Daughter | — | 18 | ~1922 |
| Catherine Mcdermott | Daughter | — | 12 | ~1928 |
| Mary Mcdermott | Daughter | — | 22 | ~1918 |
| Theresa Mcdermott | Daughter | — | 9 | ~1931 |
| Helen Mcdermott | Daughter | — | 16 | ~1924 |
| John Mcdermott | Head | — | 52 | ~1888 |
| Thomas Mcdermott | Son | — | 14 | ~1926 |
| John Mcdermott | Son | — | 20 | ~1920 |
| Annie Mcdermott | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Middlesex, Massachusetts
Head, age 43
Middlesex, Massachusetts · implied b. ~1887 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacDermott |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1915 |
| Age at First Marriage | 36 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Molder |
| Industry | Stove factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birthplace (normalized) | irish free state |
1940
Suffolk-County, Massachusetts
Head, age 52
Suffolk-County, Massachusetts · implied b. ~1888 — 9 household members
| Surname | McDermott |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Occupation | Candy Maker |
| Industry | Candy Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1352 |
| Highest Grade | 8 |
| 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 John Mcdermott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcdermott
Head · 1940 · age 52 · b. ~1888 · Massachusetts
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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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01676-00319)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Delina Mckenna | 59 | Wife | — | Canada |
| 2 | Henry F. Mckenna | 25 | Son | Clerk | Mass |
| 3 | Donald E. Mckenna | 20 | Son | Painter | Mass |
| 4 | Wilbur G. Wishcroft | 43 | Head | Mechanic | Mass |
| 5 | Linda Wishcroft | 41 | Wife | — | New York |
| 6 | Richard N. Wishcroft | 17 | Son | — | Mass |
| 7 | Georgina M. Wishcroft | 16 | Daughter | — | Mass |
| 8 | Ruth M. Wishcroft | 14 | Daughter | — | Mass |
| 9 | Norman R. Cox | 25 | Head | Shipper | Mass |
| 10 | Doris A. G. Cox | 25 | Wife | — | Mass |
| 11 | Frederick R. Cox | 6 | Son | — | Mass |
| 12 | Barbara G. Cox | 5 | Daughter | — | Mass |
| 13 | Norman R. Jr. Cox | 4 | Son | — | Mass |
| 14 | Carroll F. Cox | 1 | Daughter | — | Mass |
| 15 | Eileen M. Daley | 40 | Head | — | Mass |
| 16 | James W. Daley | 19 | Son | Playground Caretaker | Mass |
| 17 | Eileen R. Daley | 17 | Daughter | — | Mass |
| 18 | Jacqueline M. Daley | 13 | Daughter | — | Mass |
| 19 | Marjorie Daley | 7 | Daughter | — | Mass |
| 20 | Eva M. Schwennd | 45 | Head | — | Mass |
| 21 | Paul Schwennd | 11 | Son | — | Mass |
| 22 | Joan Schwennd | 10 | Daughter | — | Mass |
| 23 | John J. Mcdermott THIS PERSON | 52 | Head | Candy Maker | Irish Free State |
| 24 | Annie G. Mcdermott | 52 | Wife | — | Irish Free State |
| 25 | Mary A. Mcdermott | 22 | Daughter | Waitress | Mass |
| 26 | John L. Mcdermott | 20 | Son | Candy Maker | Mass |
| 27 | Anna M. Mcdermott | 18 | Daughter | — | Mass |
| 28 | Helen P. Mcdermott | 16 | Daughter | — | Mass |
| 29 | Thomas P. Mcdermott | 14 | Son | — | Mass |
| 30 | Catherine R. Mcdermott | 12 | Daughter | — | Mass |
| 31 | Theresa V. Mcdermott | 9 | Daughter | — | Mass |
| 32 | Chester B. Wood | 52 | Head | Book Binder | Mass |
| 33 | Frederick T. Love | 31 | Head | Candy Maker | Pa |
| 34 | Edna L. Love | 28 | Wife | — | England |
| 35 | Thelma J. Love | 6 | Daughter | — | Mass |
| 36 | J. Frederick Love | 3 | Son | — | Mass |
| 37 | Everett B. Richards | 70 | Head | Stationary Engineer | Maine |
| 38 | Laura E. Richards | 69 | Wife | — | Canada |
| 39 | Joshua B. Perkins | 74 | Lodger | — | Mass |
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)