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John Cronin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Cronin across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 10-person household.
Age 57
b. ~1883
Male
Head
Born: Mass
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Cronin |
| Given Name | John A |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Mass |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Merchant |
| Industry | Lumber |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
| Occupation | Merchant |
| Township / Ward | Boston City |
| Est. Birth Year | ~1883 |
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 |
|---|---|---|---|---|
| Theresa Cronin | Daughter | — | 16 | ~1924 |
| Daniel Cronin | Son | — | 20 | ~1920 |
| John Cronin | Son | — | 24 | ~1916 |
| Mary Cronin | Daughter | — | 22 | ~1918 |
| Cornelius Cronin | Son | — | 14 | ~1926 |
| James Cronin | Son | — | 12 | ~1928 |
| Francis Cronin | Son | — | 16 | ~1924 |
| Abigail Cronin | Daughter | — | 21 | ~1919 |
| Mary Cronin | Spouse | — | 56 | ~1884 |
| John Cronin | Head | — | 57 | ~1883 |
Census Appearances
1930
Suffolk, Massachusetts
Head, age 50
Suffolk, Massachusetts · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cronin |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Mass |
| Age at First Marriage | 21 |
| Father's Birthplace | Mass |
| Mother's Birthplace | Mass |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7500 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1940
Suffolk-County, Massachusetts
Head, age 57
Suffolk-County, Massachusetts · implied b. ~1883 — 10 household members
| Surname | Cronin |
| Given Name | John A |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Mass |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Merchant |
| Industry | Lumber |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
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 Cronin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cronin
Head · 1940 · age 57 · b. ~1883 · Massachusetts
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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
40 people indexed on this census page (nara:1940:m-t0627-01664-00586)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Connell | 54 | wife | Buffer | Canada-Eng |
| 2 | John A Cronin THIS PERSON | 57 | head | Merchant | Mass |
| 3 | Mary E Cronin | 56 | wife | Housewife | Mass |
| 4 | John A Cronin | 24 | son | — | Mass |
| 5 | Mary L Cronin | 22 | daughter | Housewife | Mass |
| 6 | Abigail Cronin | 21 | daughter | Social Worker | Mass |
| 7 | Daniel Cronin | 20 | son | Chauffeur | Mass |
| 8 | Francis Cronin | 16 | son | — | Mass |
| 9 | Theresa Cronin | 16 | daughter | — | Mass |
| 10 | Cornelius Cronin | 14 | son | — | Mass |
| 11 | James Cronin | 12 | son | — | Mass |
| 12 | Annie B Thurston | 49 | head | Sorter | Maine |
| 13 | Kenneth Thurston | 20 | son | Repairman | Maine |
| 14 | Norman Thurston | 18 | son | Mechanic | Maine |
| 15 | Martha Thurston | 15 | daughter | Housework | Maine |
| 16 | Cora Thurston | 6 | daughter | — | Maine |
| 17 | James G Mcmahon | 25 | head | Clerk | Massachusetts |
| 18 | Marguerite Mcmahon | 24 | wife | — | Massachusetts |
| 19 | James G Jr Mcmahon | 1 | son | — | Massachusetts |
| 20 | Mary Thomey | 70 | head | — | Canada-Eng |
| 21 | George Thomey | 32 | son | Laborer | Massachusetts |
| 22 | Edward G Dalton | 23 | head | Laborer | Mass |
| 23 | Mildred E Dalton | 22 | wife | Salesgirl | Mass |
| 24 | William Quigg | 41 | head | Letter | Mass |
| 25 | Helen Quigg | 40 | wife | Housewife | Mass |
| 26 | Walter Quigg | 16 | son | — | Mass |
| 27 | William Jr Quigg | 13 | son | — | Mass |
| 28 | Helen Quigg | 11 | daughter | — | Mass |
| 29 | John Quigg | 10 | son | — | Mass |
| 30 | Thomas Quigg | 8 | son | — | Mass |
| 31 | Francis X Fasano | 22 | head | Kitchen-Man | Mass |
| 32 | Anne Fasano | 21 | wife | — | Mass |
| 33 | Joseph Davis | 46 | head | Truck-Driver | Eire |
| 34 | Nora Davis | 48 | wife | None | Eire |
| 35 | John Davis | 20 | son | Truck-Driver | Mass |
| 36 | Helen Davis | 19 | daughter | — | Mass |
| 37 | Mary Davis | 16 | daughter | — | Mass |
| 38 | Richard Davis | 15 | son | — | Mass |
| 39 | Clarence H Potter | 48 | head | Salesman | Mass |
| 40 | Mary E Potter | 37 | wife | Factory Worker | Mass |
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)