JH
John Healy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this John Healy across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1916), then head of a 5-person household.
Age 14
b. ~1916
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Healy |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Malden City Part Of |
| Est. Birth Year | ~1916 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| William Healy | Head | — | 41 | ~1889 |
| Ethel Healy | Other | — | 21 | ~1909 |
| Leo Healy | Son | — | 12 | ~1918 |
| William Healy | Son | — | 15 | ~1915 |
| John Healy | Son | — | 14 | ~1916 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healey |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 14
Middlesex, Massachusetts · implied b. ~1916 — 5 household members
| Surname | Healy |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Son, age 24
Middlesex-County, Massachusetts · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healey |
| Given Name | John B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | Shipyard |
| Class of Worker | PW |
| Hours Worked | 25 |
| Income (1939) | 432 |
| Highest Grade | Hs 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 Healy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Healey (~0.92 confidence) and father William Healy (~0.92 confidence) and mother Mary Healey (~0.92 confidence) and mother Mary Healey (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Healey
b. ~1888
Source father
● Household
· direct · ~0.92
Father
William Healy
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mary Healey
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Mary Healey
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Healy
Son · 1930 · age 14 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Leo Healy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Healy
Sibling · 1930 · age 15
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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel923:0823)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mary Rice | 18 | Daughter | Salesgirl | Massachusetts |
| 52 | Ernest Taylor | 32 | Head | Washer | Massachusetts |
| 53 | Florence Taylor | 30 | Wife-H | — | Maine |
| 54 | Warren Taylor | 10 | Son | — | Massachusetts |
| 55 | Charles Taylor | 6 | Son | — | Massachusetts |
| 56 | Phyllis Taylor | 5 | Daughter | — | Massachusetts |
| 57 | Ernest Jr Taylor | 0 | Son | — | Massachusetts |
| 58 | Alba Blair | 55 | Lodger | — | Maine |
| 59 | Raoul Morel | 29 | Head | Mechanic | Canada-French |
| 60 | Annie Morel | 33 | Wife-H | — | Russia |
| 61 | Joseph Maxford | 8 | Step-son | — | Massachusetts |
| 62 | Melvin Maxford | 4 | Step-son | — | Massachusetts |
| 63 | Frank Koralewsky | 27 | Head | General Worker | Massachusetts |
| 64 | Beatrice Koralewsky | 25 | Wife-H | Checker | Massachusetts |
| 65 | William Healy | 41 | Head | Peddler | Massachusetts |
| 66 | William Jr Healy | 15 | Son | — | Massachusetts |
| 67 | John B. Healy THIS PERSON | 14 | Son | — | Massachusetts |
| 68 | Leo W. Healy | 12 | Son | — | Massachusetts |
| 69 | Ethel F. Healy | 21 | Sister-H | — | Massachusetts |
| 70 | — | None | — | — | — |
| 71 | — | None | — | — | — |
| 72 | — | None | — | — | — |
| 73 | — | None | — | — | — |
| 74 | — | None | — | — | — |
| 75 | — | None | — | — | — |
| 76 | — | None | — | — | — |
| 77 | — | None | — | — | — |
| 78 | — | None | — | — | — |
| 79 | — | None | — | — | — |
| 80 | — | None | — | — | — |
| 81 | — | None | — | — | — |
| 82 | — | None | — | — | — |
| 83 | — | None | — | — | — |
| 84 | — | None | — | — | — |
| 85 | — | None | — | — | — |
| 86 | — | None | — | — | — |
| 87 | — | None | — | — | — |
| 88 | — | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
Related Census Records
Pedigree Summary
John + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)