JC
John Coughlin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Coughlin across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 10-person household.
Age 23
b. ~1917
Male
Son
Born: Maine
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Coughlin |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maine |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | attendant |
| Industry | gas station |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 416 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Attendant |
| Township / Ward | Malden City |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mclaughlin | Head | — | 48 | ~1892 |
| John Coughlin | Son | — | 23 | ~1917 |
| Elizabeth Coughlin | Daughter | — | 12 | ~1928 |
| Richard Coughlin | Son | — | 8 | ~1932 |
| Mary Coughlin | Daughter | — | 16 | ~1924 |
| Doris Coughlin | Daughter | — | 20 | ~1920 |
| Florence Coughlin | Daughter | — | 18 | ~1922 |
| Christine Coughlin | Spouse | — | 46 | ~1894 |
| Janet Coughlin | Daughter | — | 10 | ~1930 |
| Jean Coughlin | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1917 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coughlin |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Middlesex-County, Massachusetts
Son, age 23
Middlesex-County, Massachusetts · implied b. ~1917 — 10 household members
| Surname | Coughlin |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maine |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Occupation | attendant |
| Industry | gas station |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 416 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Coughlin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Coughlin
Son · 1940 · age 23 · b. ~1917 · Massachusetts
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Sibling
Mary Coughlin
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Coughlin
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Coughlin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Coughlin
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janet Coughlin
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Coughlin
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Coughlin
Sibling · 1940 · age 12
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-t0627-01609-00417)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Zampitella | 46 | Wife | Hairdresser | Massachusetts |
| 2 | Nena Zampitella | 25 | Daughter | Hairdresser | Massachusetts |
| 3 | Arthur Zampitella | 20 | Son | New Worker | Massachusetts |
| 4 | Rita Zampitella | 14 | Daughter | — | Massachusetts |
| 5 | Joseph Troccoli | 22 | Head | — | Italy |
| 6 | Joseph Jr Troccoli | 28 | Son | Woodworker | Massachusetts |
| 7 | Frank Troccoli | 37 | Son | Barber | Massachusetts |
| 8 | Mary Troccoli | 34 | Daughter-in-law | — | Italy |
| 9 | Emma M. Troccoli | 12 | Granddaughter | — | Massachusetts |
| 10 | Rita Troccoli | 7 | Granddaughter | — | Massachusetts |
| 11 | Laurence Machiner | 23 | Head | Custodian | Massachusetts |
| 12 | Arlene Machiner | 22 | Wife | — | Vermont |
| 13 | Thomas Croke | 46 | Head | Mechanic | Massachusetts |
| 14 | Bridget Croke | 82 | Mother | — | Eire |
| 15 | — | None | — | — | — |
| 16 | John J. Mclaughlin | 48 | Head | Machinist | Maine |
| 17 | Christine Coughlin | 46 | Wife | — | Maine |
| 18 | John F. Coughlin THIS PERSON | 23 | Son | Attendant | Maine |
| 19 | Doris Coughlin | 20 | Daughter | Table Girl | Maine |
| 20 | Florence Coughlin | 18 | Daughter | — | Maine |
| 21 | Mary Coughlin | 16 | Daughter | — | Maine |
| 22 | Elizabeth Coughlin | 12 | Daughter | — | Maine |
| 23 | Janet Coughlin | 10 | Daughter | — | Massachusetts |
| 24 | Richard Coughlin | 8 | Son | — | Massachusetts |
| 25 | Jean Coughlin | 6 | Daughter | — | Massachusetts |
| 26 | James B. Canning | 47 | Head | Truckman | Massachusetts |
| 27 | Jennie Canning | 45 | Wife | — | Massachusetts |
| 28 | Edward Brown | 83 | Uncle | — | New Hampshire |
| 29 | Mabel Canning | 18 | Daughter | New Worker | Massachusetts |
| 30 | Phyllis Canning | 17 | Daughter | — | Massachusetts |
| 31 | Shirley Canning | 15 | Daughter | — | Massachusetts |
| 32 | James Canning | 9 | Son | — | Massachusetts |
| 33 | Richard Canning | 6 | Son | — | Massachusetts |
| 34 | William Canning | 5 | Son | — | Massachusetts |
| 35 | Ralph Zampitella | 28 | Head | Mechanic | Massachusetts |
| 36 | Louise Zampitella | 25 | Wife | — | Massachusetts |
| 37 | Joseph Demita | 63 | Head | — | Italy |
| 38 | Josie Demita | 49 | Wife | — | Italy |
| 39 | Esther Demita | 20 | Daughter | Packer | Massachusetts |
| 40 | Edward Willey | 57 | Head | Machinist | England |
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)