JC
John Coughlin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Coughlin across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Coughlin |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston CITY |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | laborer |
| Industry | coal |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 240 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Boston City |
| Est. Birth Year | ~1918 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Coughlin | Son | — | 22 | ~1918 |
| R Coughlin | Son | — | 32 | ~1908 |
| Estelle Coughlin | Daughter | — | 19 | ~1921 |
| Jessie Coughlin | Spouse | — | 56 | ~1884 |
| Alfred Coughlin | Head | — | 62 | ~1878 |
| H Coughlin | Son | — | 27 | ~1913 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 14
Suffolk, Massachusetts · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caughlin |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 6 household members
| Surname | Coughlin |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston CITY |
| 1935 Residence (County) | Suffolk |
| Occupation | laborer |
| Industry | coal |
| Class of Worker | PW |
| Hours Worked | 28 |
| Income (1939) | 240 |
| 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 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 22 · b. ~1918 · Massachusetts
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Sibling
R Coughlin
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Estelle Coughlin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
H Coughlin
Sibling · 1940 · age 27
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
19 people indexed on this census page (nara:1940:m-t0627-01679-00469)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward H. Estrany | 34 | Head | Accountant | Sweden |
| 2 | Loretta A. Estrany | 25 | Wife | — | Massachusetts |
| 3 | Thomas Estrany | 2 | Son | — | Massachusetts |
| 4 | Milford A. Rogers | 47 | Head | Electrician | Massachusetts |
| 5 | Clara M. Rogers | 47 | Wife | — | Massachusetts |
| 6 | Milford E. Rogers | 25 | Son | Engineer | Massachusetts |
| 7 | Richard W. Rogers | 15 | Son | — | Massachusetts |
| 8 | Frederick W. Boyle | 63 | Head | Undertaker | Maine |
| 9 | Sarah V. Boyle | 58 | Wife | — | Massachusetts |
| 10 | John G. Boyle | 29 | Son | Stenographer | Massachusetts |
| 11 | Marjorie G. Boyle | 25 | Daughter | Proof Reader | Massachusetts |
| 12 | Mary V. Boyle | 22 | Daughter | Clerk | Massachusetts |
| 13 | James Crellery | 65 | Boarder | — | Ireland |
| 14 | Alfred G. Coughlin | 62 | Head | Plumber | England |
| 15 | Jessie Coughlin | 56 | Wife | — | Scotland |
| 16 | R. Neville Coughlin | 32 | Son | Sales | Massachusetts |
| 17 | H. Maurice Coughlin | 27 | Son | Chauffeur | Massachusetts |
| 18 | John F. Coughlin THIS PERSON | 22 | Son | Laborer | Massachusetts |
| 19 | Estelle Coughlin | 19 | Daughter | Rear Worker | 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)