JH
John Healey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Healey across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Healey |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Healey | Spouse | — | 37 | ~1903 |
| Maurice Mansfield | Other | — | 17 | ~1923 |
| James Healey | Son | — | 7 | ~1933 |
| John Healey | Son | — | 11 | ~1929 |
| Ellen Healey | Daughter | — | 3 | ~1937 |
| John Healey | Head | — | 46 | ~1894 |
| Robert Healey | Son | — | 13 | ~1927 |
| Dorothy Healey | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healy |
| Given Name | John J Jr |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 8 household members
| Surname | Healey |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Highest Grade | No 4 |
| 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 John Healey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Healey
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Robert Healey
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Healey
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Healey
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Healey
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 — 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-t0627-01702-00468)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Manuel Cirillo | 28 | Head | Laborer | Portugal |
| 42 | Florence Cirillo | 22 | Wife | — | Massachusetts |
| 43 | Jack Cirillo | 4 | Son | — | Massachusetts |
| 44 | Ernest Cirillo | 3 | Son | — | Massachusetts |
| 45 | John J. Healey | 46 | Head | Dry Goods | Massachusetts |
| 46 | Helen Healey | 37 | Wife | — | Massachusetts |
| 47 | Robert Healey | 13 | Son | — | Massachusetts |
| 48 | John Jr. Healey THIS PERSON | 11 | Son | — | Massachusetts |
| 49 | Dorothy Healey | 9 | Daughter | — | Massachusetts |
| 50 | James Healey | 7 | Son | — | Massachusetts |
| 51 | Ellen Healey | 3 | Daughter | — | Massachusetts |
| 52 | Maurice Mansfield | 17 | Step-son | Delivery Boy | Massachusetts |
| 53 | Gaetano Upertroppo | 36 | Head | Packer | Italy |
| 54 | Mary Upertroppo | 32 | Wife | — | Italy |
| 55 | Alfred Upertroppo | 10 | Son | — | Massachusetts |
| 56 | Anna M. Upertroppo | 4 | Daughter | — | Massachusetts |
| 57 | Anthony Carruso | 24 | Head | Chauffeur | Massachusetts |
| 58 | Edith Carruso | 26 | Wife | — | Massachusetts |
| 59 | James Stuart | 29 | Head | Painter | Massachusetts |
| 60 | Doris Stuart | 26 | Wife | — | Massachusetts |
| 61 | Melvin Stuart | 8 | Son | — | Massachusetts |
| 62 | Barbara Stuart | 6 | Daughter | — | Massachusetts |
| 63 | Louis Stuart | 2 | Son | — | Massachusetts |
| 64 | Harold Stuart | 23 | Brother | Painter | Massachusetts |
| 65 | Russell Stuart | 21 | Brother | Laborer | Massachusetts |
| 66 | John J. Donovan | 30 | Head | Builder & Painter | Massachusetts |
| 67 | Helen Donovan | 26 | Wife | — | Massachusetts |
| 68 | John Donovan | 7 | Son | — | Massachusetts |
| 69 | Jean Donovan | 5 | Daughter | — | Massachusetts |
| 70 | Gladys Donovan | 2 | Daughter | — | Massachusetts |
| 71 | Lois Donovan | 1 | Daughter | — | Massachusetts |
| 72 | David Allard | 15 | Brother-in-law | New Worker | Massachusetts |
| 73 | Anthony D'Ovidio | 56 | Head | Laborer | Italy |
| 74 | Viola D'Ovidio | 46 | Wife | — | Italy |
| 75 | Germaine D'Ovidio | 19 | Daughter | Seamstress | Italy |
| 76 | Phylis D'Ovidio | 12 | Daughter | — | Italy |
| 77 | George Duran | 21 | Head | Truck Driver | Massachusetts |
| 78 | Elizabeth Duran | 26 | Wife | — | Massachusetts |
| 79 | Joan A. Duran | 0 | Daughter | — | Massachusetts |
| 80 | Rose Articary | 81 | Head | — | 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)