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John Dwyer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hampden-County, Massachusetts
Our Model Tree links this John Dwyer across the 1930 and 1940 US Censuses in Hampden-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hampden-County, Massachusetts |
| Surname | Dwyer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Hampden |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Springfield |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Nellie Dwyer | Spouse | — | 45 | ~1895 |
| Eileen Dwyer | Daughter | — | 17 | ~1923 |
| John Dwyer | Son | — | 16 | ~1924 |
| William Dwyer | Son | — | 11 | ~1929 |
| Daniel Dwyer | Head | — | 45 | ~1895 |
| Timothy Dwyer | Son | — | 11 | ~1929 |
| Daniel Dwyer | Son | — | 13 | ~1927 |
| Anna Dwyer | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Hampden, Massachusetts
Son, age 6
Hampden, Massachusetts · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | John D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Hampden-County, Massachusetts
Son, age 16
Hampden-County, Massachusetts · implied b. ~1924 — 8 household members
| Surname | Dwyer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Hampden |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| 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 John Dwyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Dwyer
Son · 1940 · age 16 · b. ~1924 · Massachusetts
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Sibling
Timothy Dwyer
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Dwyer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Dwyer
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Dwyer
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Dwyer
Sibling · 1940 · age 19
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 — Hampden-County, Massachusetts
Open full size
1940 US Federal Census — Hampden-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01706-00313)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Geraldine Stark | 6 | Daughter | — | Massachusetts |
| 42 | Doris Stark | 5 | Daughter | — | Massachusetts |
| 43 | Arthur Stark | 4 | Son | — | Massachusetts |
| 44 | Kenneth Stark | 3 | Son | — | Massachusetts |
| 45 | Constance Stark | 1 | Daughter | — | Massachusetts |
| 46 | Alphonso Martinelli | 44 | Head | Machinist | Italy |
| 47 | Emma Martinelli | 34 | Wife | — | Italy |
| 48 | August Martinelli | 7 | Son | — | Massachusetts |
| 49 | Pietro Martinelli | 3 | Son | — | Massachusetts |
| 50 | Maria Dolores Martinelli | 1 | Daughter | — | Massachusetts |
| 51 | Samuel Zahaykevitz | 46 | Head | Concrete Worker | Ukrania |
| 52 | Palakna Zahaykevitz | 39 | Wife | — | Ukrania |
| 53 | Teklia Zahaykevitz | 11 | Daughter | — | Massachusetts |
| 54 | Samuel Zahaykevitz | 10 | Son | — | Massachusetts |
| 55 | Wasyl Zahaykevitz | 9 | Son | — | Massachusetts |
| 56 | Wasyl Coyka | 50 | Lodger | Concrete Worker | Ukrania |
| 57 | Helen Coyka | 14 | Lodger | — | Massachusetts |
| 58 | James Leary | 46 | Head | Machinist Helper | Massachusetts |
| 59 | Julia Leary | 52 | Wife | — | Irish Free State |
| 60 | Walter Sullivan | 38 | Head | Assembler | Vermont |
| 61 | Isabella Sullivan | 46 | Wife | — | Massachusetts |
| 62 | Walter Sullivan | 5 | Son | — | Massachusetts |
| 63 | Daniel Dwyer | 45 | Head | Brick-Layer Helper | Irish Free State |
| 64 | Nellie Dwyer | 45 | Wife | — | Irish Free State |
| 65 | Anna Dwyer | 19 | Daughter | Clerk | Massachusetts |
| 66 | Eileen Dwyer | 17 | Daughter | — | Massachusetts |
| 67 | John Dwyer THIS PERSON | 16 | Son | — | Massachusetts |
| 68 | Daniel Dwyer | 13 | Son | — | Massachusetts |
| 69 | Timothy Dwyer | 11 | Son | — | Massachusetts |
| 70 | William Dwyer | 11 | Son | — | Massachusetts |
| 71 | Morris Fisher | 55 | Head | Peddler | Russia |
| 72 | Fannie Fisher | 50 | Wife | Seamstress | Poland |
| 73 | Abraham Fisher | 9 | Son | — | Massachusetts |
| 74 | Bridget Scully | 32 | Head | — | Irish Free State |
| 75 | Joseph Richard Scully | 11 | Son | — | Massachusetts |
| 76 | William Scully | 8 | Son | — | Massachusetts |
| 77 | James Green | 33 | Head | Milk Peddler | N. Carolina |
| 78 | Winifred Green | 30 | Wife | Supervisor | Massachusetts |
| 79 | John Schecker | 30 | Head | Machinist | New Jersey |
| 80 | Caroline Schecker | 30 | Wife | — | Massachusetts |
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)