JF
John Finn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Finn across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 4
b. ~1926
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | FINN |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1926 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Finn | Spouse | — | 33 | ~1897 |
| Margaret Finn | Daughter | — | 8 | ~1922 |
| Thomas Finn | Son | — | 9 | ~1921 |
| John Finn | Son | — | 4 | ~1926 |
| Mary Finn | Daughter | — | 7 | ~1923 |
| John Finn | Head | — | 31 | ~1899 |
| Dorothy Finn | Daughter | — | 2 | ~1928 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 4
Suffolk, Massachusetts · implied b. ~1926 — 7 household members
| Surname | FINN |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 15
Suffolk-County, Massachusetts · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fine |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Revere City |
| 1935 Residence (County) | Suffolk |
| Industry | 0 |
| Highest Grade | Hs 2 |
| 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 Finn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Finn
Son · 1930 · age 4 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Dorothy Finn
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Finn
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Finn
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Finn
Sibling · 1930 · age 9
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:massachusettscensus00reel947:0145)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John P. Bevins | 42 | Head | Roofer | Massachusetts |
| 2 | Mary Bevins | 42 | Wife | None | Massachusetts |
| 3 | Esther M. Harrigan | 34 | Lodger | Office Clerk | Massachusetts |
| 4 | Arthur P. Harrigan | 32 | Lodger | Chauffeur | Massachusetts |
| 5 | Francesco D'Addio | 54 | Head | Tailor | Italy |
| 6 | Francesca D'Addio | 52 | Wife | None | Italy |
| 7 | Constantino D'Addio | 27 | Son | Proprietor | Italy |
| 8 | Pellegrino D'Addio | 19 | Son | Boot Black | Massachusetts |
| 9 | Rose D'Addio | 17 | Daughter | Machine Operator | Massachusetts |
| 10 | Minnie D'Addio | 12 | Daughter | None | Massachusetts |
| 11 | Catherine Hall | 48 | Head | Washwoman | Newfoundland |
| 12 | Antonio Fontana | 50 | Head | Laborer | Italy |
| 13 | Adeline Fontana | 48 | Wife | None | Italy |
| 14 | Joseph Fontana | 10 | Son | None | Massachusetts |
| 15 | Louis Fontana | 9 | Son | None | Massachusetts |
| 16 | Peter Fontana | 7 | Son | None | Massachusetts |
| 17 | Mary Sihains | 48 | Head | Washwoman | Irish Free State |
| 18 | Elizabeth Sihains | 13 | Daughter | None | Massachusetts |
| 19 | Ann Gibbons | 56 | Sister | Washwoman | Irish Free State |
| 20 | Margaret Mc Carthy | 61 | Head | None | Irish Free State |
| 21 | Sarah Conley | 60 | Lodger | Housekeeper | New Hampshire |
| 22 | Joseph White | 39 | Head | Utility Man | Canada-English |
| 23 | Gordon White | 14 | Son | None | Canada-English |
| 24 | Rita White | 12 | Daughter | None | Canada-English |
| 25 | Benny Pettinato | 44 | Head | Laborer | Italy |
| 26 | Rose Pettinato | 38 | Wife | None | New Jersey |
| 27 | Matthew Pettinato | 18 | Son | Laborer | Missouri |
| 28 | Concetta Pettinato | 13 | Daughter | None | Massachusetts |
| 29 | Anthony Pettinato | 10 | Son | None | Massachusetts |
| 30 | Josephine Pettinato | 6 | Daughter | None | Massachusetts |
| 31 | Floridance Pettinato | 1 | Daughter | None | Massachusetts |
| 32 | Edward B. Conlon | 41 | Head | Teamster | Massachusetts |
| 33 | Adele Conlon | 38 | Wife | None | Massachusetts |
| 34 | James F. Conlon | 18 | Son | Press-Feeder | Massachusetts |
| 35 | Catherine Conlon | 12 | Daughter | None | Massachusetts |
| 36 | Edward Conlon | 11 | Son | None | Massachusetts |
| 37 | Adele Conlon | 8 | Daughter | None | Massachusetts |
| 38 | Frederick Conlon | 7 | Son | None | Massachusetts |
| 39 | Francis Conlon | 6 | Son | None | Massachusetts |
| 40 | Robert Conlon | 4 | Son | None | Massachusetts |
| 41 | John J. Finn | 31 | Head | Truck Driver | Massachusetts |
| 42 | Mary E. Finn | 33 | Wife | None | Pennsylvania |
| 43 | Thomas F. Finn | 9 | Son | None | Massachusetts |
| 44 | Margaret G. Finn | 8 | Daughter | None | Massachusetts |
| 45 | Mary C. Finn | 7 | Daughter | None | Massachusetts |
| 46 | John J. Jr. Finn THIS PERSON | 4 | Son | None | Massachusetts |
| 47 | Dorothy A. Finn | 2 | Daughter | None | Massachusetts |
| 48 | Elizabeth C. Brine | 56 | Head | Nurse | Irish Free State |
| 49 | Flo C. Goldberg | 26 | Head | Electrical Engineer | Massachusetts |
| 50 | Bessie Goldberg | 62 | Mother | None | Russia |
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)