JC
John Cronin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Cronin across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 2-person household.
Age 67
b. ~1873
Male
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cronin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Newton City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Newton City |
| Est. Birth Year | ~1873 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Cronin | Daughter | — | 40 | ~1900 |
| John Cronin | Head | — | 67 | ~1873 |
Census Appearances
1920
Essex, Massachusetts
Head, age 47
Essex, Massachusetts · implied b. ~1873 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cronin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1912 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Electrical Mfg |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Middlesex, Massachusetts
Head, age 57
Middlesex, Massachusetts · implied b. ~1873
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Cronin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Alien |
| Year of Immigration | 1913 |
| Age at First Marriage | 22 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Cleaner |
| Industry | Body Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Middlesex-County, Massachusetts
Head, age 67
Middlesex-County, Massachusetts · implied b. ~1873 — 2 household members
| Surname | Cronin |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Newton City |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | No |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Cronin
Head · 1940 · age 67 · b. ~1873 · 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 — 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-t0627-01614-00404)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George R Huden | 36 | Head | Supervisor | Maine |
| 2 | Mary G Huden | 33 | Wife | — | Vermont |
| 3 | George R Huden | 9 | Son | — | Vermont |
| 4 | Walter J Elkins | 35 | Head | Carpenter | New Hampshire |
| 5 | Phyllis R Elkins | 37 | Wife | — | New York |
| 6 | Jean M Elkins | 14 | Daughter | — | Massachusetts |
| 7 | Marjory R Marjory | 12 | Daughter | — | Massachusetts |
| 8 | Robert D Marjory | 7 | Son | — | Massachusetts |
| 9 | John Cronin THIS PERSON | 67 | Head | — | Ireland |
| 10 | Catherine Cronin | 40 | Daughter | Housekeeper | Ireland |
| 11 | John C Fay | 51 | Head | Mail Carrier | Massachusetts |
| 12 | Francis L Fay | 22 | Daughter | Clerical | Massachusetts |
| 13 | Sara L Fay | 17 | Daughter | — | Massachusetts |
| 14 | Mabel Cameron | 45 | Sister | — | Canada |
| 15 | George G West | 75 | Head | — | Nova Scotia |
| 16 | Mary L West | 72 | Wife | — | Nova Scotia |
| 17 | David C Lombard | 69 | Head | Dentist | Maine |
| 18 | Edith P Lombard | 68 | Wife | — | Maine |
| 19 | David C Lombard | 38 | Head | Asst. Clerk | Massachusetts |
| 20 | Esther H Lombard | 40 | Sister | Clerk | Massachusetts |
| 21 | Estella H Lombard | 63 | Mother | — | Massachusetts |
| 22 | Adolph H Ringrow | 47 | Head | Salesman | Pennsylvania |
| 23 | Carolyn A Ringrow | 45 | Wife | — | Pennsylvania |
| 24 | Grace E Ringrow | 21 | Daughter | Secretary | Pennsylvania |
| 25 | Claire M Ringrow | 19 | Daughter | — | Pennsylvania |
| 26 | William A Ringrow | 16 | Son | — | Pennsylvania |
| 27 | Colin M Campbell | 42 | Head | Office Manager | Canada |
| 28 | Ruth L Campbell | 41 | Wife | — | Massachusetts |
| 29 | Barbara E Campbell | 16 | Daughter | — | Massachusetts |
| 30 | Nancy G Campbell | 8 | Daughter | — | Massachusetts |
| 31 | Edmund T Studley | 34 | Head | Telephone Operator | Massachusetts |
| 32 | Lois G Studley | 30 | Wife | — | Massachusetts |
| 33 | Isabell L Studley | 8 | Daughter | — | Massachusetts |
| 34 | Edmund J Studley | 7 | Son | — | Massachusetts |
| 35 | Janet E Studley | 6 | Daughter | — | Massachusetts |
| 36 | Walter J Smith | 68 | Father-in-law | — | Massachusetts |
| 37 | George J Patterson | 40 | Head | Maintenance | Massachusetts |
| 38 | Florence M Patterson | 35 | Wife | — | Massachusetts |
| 39 | George Jr Patterson | 12 | Son | — | Massachusetts |
| 40 | David S Patterson | 7 | Son | — | 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)