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James Dempsey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Dempsey across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 6-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City of |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Malden City Of |
| Est. Birth Year | ~1929 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| William Dempsey | Head | — | 41 | ~1899 |
| Barbara Dempsey | Spouse | — | 38 | ~1902 |
| Paul Dempsey | Son | — | 14 | ~1926 |
| Joan Dempsey | Daughter | — | 13 | ~1927 |
| William Dempsey | Son | — | 15 | ~1925 |
| James Dempsey | Son | — | 11 | ~1929 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dempsey |
| Given Name | James Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 6 household members
| Surname | Dempsey |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City of |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 James Dempsey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Dempsey
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Joan Dempsey
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Dempsey
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Dempsey
Sibling · 1940 · age 14
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01609-00284)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fayett Leighton | 46 | Head | Stripper | Maine |
| 2 | Birdie Leighton | 46 | Wife | — | Canada |
| 3 | Faith Leighton | 16 | Daughter | — | Massachusetts |
| 4 | Norman M Fletcher | 29 | Head | Piano Tuner | Massachusetts |
| 5 | Norma E Fletcher | 22 | Wife | — | Maine |
| 6 | Thomas H Morash | 27 | Head | Truck Driver | Massachusetts |
| 7 | Rita Morash | 24 | Wife | — | Massachusetts |
| 8 | Catherine Morash | 3 | Daughter | — | Massachusetts |
| 9 | Evelyn Morash | 2 | Daughter | — | Massachusetts |
| 10 | Thomas Morash | 0 | Son | — | Massachusetts |
| 11 | Katherine Denny | 22 | Sister in law | Inspector | Massachusetts |
| 12 | David J Shiny | 35 | Head | Salesman | Massachusetts |
| 13 | Ethel M Shiny | 35 | Wife | — | Massachusetts |
| 14 | Theresa Shiny | 7 | Daughter | — | Massachusetts |
| 15 | Ethel M Shiny | 6 | Daughter | — | Massachusetts |
| 16 | David Shiny | 4 | Son | — | Massachusetts |
| 17 | Alice L Shiny | 2 | Daughter | — | Massachusetts |
| 18 | Mary Shiny | 72 | Mother | — | Massachusetts |
| 19 | Jeremiah Melanson | 60 | Head | Silversmith | Canada |
| 20 | Sarah L Melanson | 54 | Wife | Fisherman | Massachusetts |
| 21 | Robert M Melanson | 24 | Son | Scarfer | Massachusetts |
| 22 | Edith J Melanson | 20 | Daughter | Paint Mixer | Massachusetts |
| 23 | Alfred J Melanson | 14 | Son | — | Massachusetts |
| 24 | Jacobina Meredith | 78 | Mother in law | — | Canada |
| 25 | Evelyn R Moran | 65 | Head | — | Scotland |
| 26 | Minnie M Moran | 31 | Daughter | Agent | Massachusetts |
| 27 | James E Lee | 55 | Head | Railway Electrician | Massachusetts |
| 28 | Grace E Lee | 53 | Wife | — | Massachusetts |
| 29 | John Cragen | 24 | Brother in law | Electrician Apprentice | New Hampshire |
| 30 | Dorothy Cragen | 24 | Daughter | — | Massachusetts |
| 31 | Richard J Cragen | 3 | Son | — | Massachusetts |
| 32 | Carol Cragen | 2 | Daughter | — | Massachusetts |
| 33 | William J Herder | 67 | Head | Carpenter | Canada |
| 34 | Catherine Herder | 70 | Wife | — | Canada |
| 35 | William J Dempsey | 41 | Head | Teacher | Massachusetts |
| 36 | Barbara M Dempsey | 38 | Wife | — | Ohio |
| 37 | William Dempsey | 15 | Son | — | Massachusetts |
| 38 | Paul Dempsey | 14 | Son | — | Massachusetts |
| 39 | Joan Dempsey | 13 | Daughter | — | Massachusetts |
| 40 | James Dempsey THIS PERSON | 11 | Son | — | Massachusetts |
Related Census Records
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)