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John Cronin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Cronin across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 8-person household.
Age 5
b. ~1925
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Cronin |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Boston |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Cronin | Daughter | — | 13 | ~1917 |
| Margaret Cronin | Spouse | — | 35 | ~1895 |
| Anna Cronin | Daughter | — | 7 | ~1923 |
| Joseph Cronin | Son | — | 4 | ~1926 |
| Mary Cronin | Daughter | — | 2 | ~1928 |
| John Cronin | Son | — | 5 | ~1925 |
| John Cronin | Head | — | 40 | ~1890 |
| Mortimer Cronin | Son | — | 11 | ~1919 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 5
Suffolk, Massachusetts · implied b. ~1925 — 8 household members
| Surname | Cronin |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 15
Suffolk-County, Massachusetts · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crenan |
| Given Name | John J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | Hs 1 |
| 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 Cronin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cronin
Son · 1930 · age 5 · b. ~1925 · Massachusetts
★ You are viewing this record
Sibling
Margaret Cronin
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mortimer Cronin
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Cronin
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cronin
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Cronin
Sibling · 1930 · age 7
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
1930 US Federal Census — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel947:0791)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Robert H. Cushing | 61 | Head | — | Massachusetts |
| 52 | Eustace Meade | 52 | Head | Metal Worker | England |
| 53 | Mary Meade | 46 | Wife | — | England |
| 54 | Edith C. Meade | 23 | Daughter | Secretary | Massachusetts |
| 55 | John Tierney | 42 | Head | Tree-Man | Irish Free State |
| 56 | Mary M. Tierney | 32 | Wife | — | Irish Free State |
| 57 | Mary Tierney | 7 | Daughter | — | Massachusetts |
| 58 | Sabina Tierney | 5 | Daughter | — | Massachusetts |
| 59 | Joan Tierney | 1 | Daughter | — | Massachusetts |
| 60 | Henry Mcgrady | 32 | Head | Shipper | Massachusetts |
| 61 | Elizabeth C. Mcgrady | 43 | Wife | — | Massachusetts |
| 62 | Fred N. Bellewain | 38 | Head | Upholsterer | Canada-English |
| 63 | Cassie Bellewain | 28 | Wife | Tennis Maker | Irish Free State |
| 64 | Charles Bellewain | 28 | Brother | Upholsterer | Canada-English |
| 65 | John J. Mcrudin | 35 | Head | Helper | Irish Free State |
| 66 | Katherine G. Mcrudin | 32 | Wife | — | Massachusetts |
| 67 | John J. Mcrudin | 3 | Son | — | Massachusetts |
| 68 | Ernest Mcmillan | 36 | Head | Salesman | Massachusetts |
| 69 | Edith Mcmillan | 38 | Wife | Saleswoman | Massachusetts |
| 70 | John Morrissey | 48 | Head | Motor Man | Irish Free State |
| 71 | Sabina Morrissey | 52 | Wife | — | Irish Free State |
| 72 | John Meehan | 18 | Nephew | Salesman | Irish Free State |
| 73 | John J. Mahoney | 36 | Head | Police-Officer | Massachusetts |
| 74 | Margaret J. Mahoney | 35 | Wife | — | Massachusetts |
| 75 | Margaret Mahoney | 4 | Daughter | — | Massachusetts |
| 76 | John J. Mahoney | 1 | Son | — | Massachusetts |
| 77 | George T. Larsen | 41 | Head | Machinist | Sweden |
| 78 | Anna C. Larsen | 43 | Wife | — | Sweden |
| 79 | Eric T. Larsen | 15 | Son | — | Sweden |
| 80 | Charles Spooner | 60 | Head | Cobbler | New Hampshire |
| 81 | Christina Spooner | 57 | Wife | — | Canada-English |
| 82 | Edith Spooner | 13 | Daughter | — | Massachusetts |
| 83 | David C. Marshall | 34 | Lodger | Laborer | Scotland |
| 84 | John J. Cronin | 40 | Head | Chauffeur | Irish Free State |
| 85 | Margaret Cronin | 35 | Wife | — | Irish Free State |
| 86 | Margaret Cronin | 13 | Daughter | — | Massachusetts |
| 87 | Mortimer Cronin | 11 | Son | — | Massachusetts |
| 88 | Anna Cronin | 7 | Daughter | — | Massachusetts |
| 89 | John Jr. Cronin THIS PERSON | 5 | Son | — | Massachusetts |
| 90 | Joseph Cronin | 4 | Son | — | Massachusetts |
| 91 | Mary Cronin | 2 | Daughter | — | Massachusetts |
| 92 | Frank Macy | 49 | Head | Auto Mechanic | Vermont |
| 93 | Anna Macy | 42 | Wife | — | Maine |
| 94 | George Galfa | 37 | Head | Merchant | Syria |
| 95 | Thelma Galfa | 24 | Wife | — | Syria |
| 96 | John Galfa | 5 | Son | — | Rhode Island |
| 97 | Alice Galfa | 2 | Daughter | — | Massachusetts |
| 98 | Norman Galfa | 1 | Son | — | Massachusetts |
| 99 | Humbert Ferrandi | 40 | Head | Book-Keeper | Massachusetts |
| 100 | Mary Ferrandi | 39 | Wife | — | Italy |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)