JH
John Healy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Healy across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Healy |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Partner |
| Industry | Publishing Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 141 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Partner |
| Township / Ward | Medford City |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Katherine Healy | Daughter | — | 19 | ~1921 |
| Adele Healy | Daughter | — | 10 | ~1930 |
| John Healy | Head | — | 56 | ~1884 |
| John Healy | Son | — | 21 | ~1919 |
| Robert Healy | Son | — | 20 | ~1920 |
| James Healy | Son | — | 13 | ~1927 |
| Adele Healy | Spouse | — | 53 | ~1887 |
Census Appearances
Son, age 1
Middlesex, Massachusetts · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healey |
| Given Name | John W. |
| 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 |
1930
Middlesex, Massachusetts
Son, age 12
Middlesex, Massachusetts · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healy |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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 |
1940
Middlesex-County, Massachusetts
Son, age 21
Middlesex-County, Massachusetts · implied b. ~1919 — 7 household members
| Surname | Healy |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford city |
| 1935 Residence (County) | Middlesex |
| Occupation | Partner |
| Industry | Publishing Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 141 |
| Highest Grade | H-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 John Healy (~0.92 confidence) and father John Healy (~0.92 confidence) and father John Healey (~0.92 confidence) and mother Adele Healy (~0.92 confidence) and mother Ada Healey (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Healy
b. ~1884
Source father
● Household
· direct · ~0.92
Father
John Healy
b. ~1884
Source father
● Household
· direct · ~0.92
Father
John Healey
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Adele Healy
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Ada Healey
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Healy
Son · 1940 · age 21 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Adele Healy
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Healy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Healy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Healy
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 — 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-t0627-01611-00496)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H Healy | 56 | Head | Salesman | Massachusetts |
| 2 | Adele F Healy | 53 | Wife | — | Massachusetts |
| 3 | John W Healy THIS PERSON | 21 | Son | Partner | Massachusetts |
| 4 | Robert G Healy | 20 | Son | Stock-Clerk | Massachusetts |
| 5 | Katherine M Healy | 19 | Daughter | Typist | Massachusetts |
| 6 | James A Healy | 13 | Son | — | Massachusetts |
| 7 | Adele F Healy | 10 | Daughter | — | Massachusetts |
| 8 | Doris P Chandler | 42 | Head | Clerical | Massachusetts |
| 9 | Jean Chandler | 18 | Daughter | — | Massachusetts |
| 10 | Merwin E Chandler | 16 | Son | — | Massachusetts |
| 11 | Alan Chandler | 13 | Son | — | Massachusetts |
| 12 | Saul C Appel | 48 | Head | Heating Engineer | Massachusetts |
| 13 | Elsie M Appel | 46 | Wife | — | Massachusetts |
| 14 | Donald Appel | 15 | Son | — | Massachusetts |
| 15 | Lewis G Curtis | 36 | Head | Salesman | Canada English |
| 16 | Stella B Curtis | 36 | Wife | — | Canada English |
| 17 | Lewis Jr Curtis | 6 | Son | — | Massachusetts |
| 18 | Sandra Curtis | 1 | Daughter | — | Massachusetts |
| 19 | William Brennan | 39 | Brother-in-law | Stationary Engineer | Canada English |
| 20 | John Kertigan | 40 | Head | Wholesale Salesman | Armenia |
| 21 | Paris Kertigan | 34 | Wife | — | Armenia |
| 22 | Myda Kertigan | 12 | Daughter | — | Massachusetts |
| 23 | Madeline Kertigan | 9 | Daughter | — | Massachusetts |
| 24 | Charles Kertigan | 8 | Son | — | Massachusetts |
| 25 | Percy S Brayton | 64 | Head | Teacher | Massachusetts |
| 26 | Mabel A Brayton | 66 | Wife | — | New Hampshire |
| 27 | Alison Brayton | 22 | Daughter | Teller | Massachusetts |
| 28 | Asa R Russell | 69 | Head | Inspector | Maine |
| 29 | Mary A Russell | 64 | Wife | — | Canada English |
| 30 | Katherine M Barrie | 47 | Sister-in-law | Typist | Canada English |
| 31 | Frederick F Johnson | 48 | Head | Purchasing Agent | Massachusetts |
| 32 | Ivy M Johnson | 50 | Wife | — | Massachusetts |
| 33 | Frederick M Johnson | 17 | Son | — | Massachusetts |
| 34 | Mary A Munn | 76 | Mother-in-law | — | Canada English |
| 35 | Fred A Rines | 68 | Head | Partner | Maine |
| 36 | Maude S Rines | 61 | Wife | — | Canada English |
| 37 | James A Number | 51 | Head | Teacher | Massachusetts |
| 38 | Fern E Number | 50 | Wife | — | Massachusetts |
| 39 | Joan Number | 18 | Daughter | — | Massachusetts |
| 40 | Collett Number | 17 | Daughter | — | Massachusetts |
Related Census Records
Pedigree Summary
John + 4 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)