MF
Mary Finn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Finn across the 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 11-person household.
Age 20
b. ~1910
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Finn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | East Lynn City |
| Est. Birth Year | ~1910 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Katherine Finn | Daughter | — | 11 | ~1919 |
| John Finn | Head | — | 43 | ~1887 |
| Mary Finn | Daughter | — | 20 | ~1910 |
| William Finn | Son | — | 3 | ~1927 |
| Sadie Finn | Spouse | — | 42 | ~1888 |
| Anna Finn | Daughter | — | 4 | ~1926 |
| John Finn | Son | — | 16 | ~1914 |
| Stephen Finn | Daughter | — | 9 | ~1921 |
| Edward Finn | Son | — | 18 | ~1912 |
| Thomas Finn | Son | — | 8 | ~1922 |
| Albert Finn | Son | — | 14 | ~1916 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 9
Essex, Massachusetts · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Finn |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Daughter, age 20
Essex, Massachusetts · implied b. ~1910 — 11 household members
| Surname | Finn |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| 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 |
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 Mary Finn across 2 US Census years (1920 and 1930) in Essex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Finn
Daughter · 1930 · age 20 · b. ~1910 · Massachusetts
★ You are viewing this record
Sibling
Katherine Finn
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Finn
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Finn
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Finn
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Finn
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Finn
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stephen Finn
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Finn
Sibling · 1930 · age 8
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 — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel899:0774)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Goldin | None | — | — | — |
| 52 | Goldin | None | — | — | — |
| 53 | Goldin | None | — | — | — |
| 54 | John Finn | 43 | Head | Clerk | Massachusetts |
| 55 | Sadie Finn | 42 | Wife | — | Ireland |
| 56 | Mary Finn THIS PERSON | 20 | Daughter | — | Massachusetts |
| 57 | Edward Finn | 18 | Son | — | Massachusetts |
| 58 | John Finn | 16 | Son | — | Massachusetts |
| 59 | Albert Finn | 14 | Son | — | Massachusetts |
| 60 | Katherine Finn | 11 | Daughter | — | Massachusetts |
| 61 | Stephen Finn | 9 | Daughter | — | Massachusetts |
| 62 | Thomas Finn | 8 | Son | — | Massachusetts |
| 63 | Anna Finn | 4 | Daughter | — | Massachusetts |
| 64 | William Finn | 3 | Son | — | Massachusetts |
| 65 | David Hesselgren | 42 | Head | Tinsmith | Finland |
| 66 | Eini Hesselgren | 32 | Wife | — | Finland |
| 67 | Rudolf Hesselgren | 10 | Son | — | Massachusetts |
| 68 | — | None | — | — | — |
| 69 | Samuel Goldberg | 33 | Head | Owner | Russia |
| 70 | Bertha Goldberg | 31 | Wife | — | England |
| 71 | Phylis Goldberg | 10 | Daughter | — | New Hampshire |
| 72 | Annette Goldberg | 3 | Daughter | — | Massachusetts |
| 73 | Joseph Faybury | 44 | Head | Mason | Ireland |
| 74 | Rose Faybury | 45 | Wife | — | Ireland |
| 75 | Lester Robinson | 43 | Boarder | Maintainer | Canada English |
| 76 | Edward Colgan | 37 | Head | Woodworker | Massachusetts |
| 77 | Katherine Colgan | 27 | Sister | Presser | Massachusetts |
| 78 | Katherine Colgan | 65 | Mother | — | Ireland |
| 79 | Mary King | 15 | Boarder | — | Canada English |
| 80 | Roscoe Stanhope | 35 | Head | Stockworker | New Hampshire |
| 81 | Ethel Stanhope | 32 | Wife | — | Massachusetts |
| 82 | Charles Robertson | 32 | Head | Sole Layer | Massachusetts |
| 83 | Edith Robertson | 32 | Wife | — | New Hampshire |
| 84 | Charles Robertson | 11 | Son | — | Massachusetts |
| 85 | Isabelle Robertson | 8 | Daughter | — | Massachusetts |
| 86 | Hazel Robertson | 5 | Daughter | — | Massachusetts |
| 87 | Daniel Donovan | 73 | Head | Owner | Massachusetts |
| 88 | Delia Donovan | 65 | Wife | — | Ireland |
| 89 | Sarah Donovan | 35 | Daughter | Stenographer | Massachusetts |
| 90 | Joseph Donovan | 31 | Son | Mechanic | Massachusetts |
| 91 | Fred Dalton | 42 | Head | Gear Maker | Massachusetts |
| 92 | Clara Dalton | 42 | Wife | — | Maine |
| 93 | Richard Dalton | 62 | Son | — | Canada French |
| 94 | Doris Dalton | 17 | Daughter | Telephone Operator | Massachusetts |
| 95 | Irving Dalton | 16 | Son | — | Massachusetts |
| 96 | Ogden Lundin | 58 | Head | Admin | Canada English |
| 97 | Abbie Lundin | 58 | Wife | — | Vermont |
| 98 | Victor Ramsville | 49 | Head | Worker | New Hampshire |
| 99 | Forrest Ramsville | 17 | Son | Stockworker | Massachusetts |
| 100 | Warren Frederick | 60 | Roomer | Pipe Maker | Massachusetts |
Related Census Records
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)