MH
Mary Healey — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Healey across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1905), then head of a 9-person household.
Age 15
b. ~1905
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Healey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford City |
| Est. Birth Year | ~1905 |
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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Daniel Healey | Son | — | 25 | ~1895 |
| John Healey | Head | — | 40 | ~1880 |
| Lawrence Healey | Son | — | 12 | ~1908 |
| Mary Healey | Daughter | — | 15 | ~1905 |
| James Healey | Son | — | 20 | ~1900 |
| Nellie Healey | Daughter | — | 22 | ~1898 |
| Helen Healey | Spouse | — | 50 | ~1870 |
| John Healey | Other | — | 9 | ~1911 |
| Katherine Healey | Daughter | — | 27 | ~1893 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 5
Middlesex, Massachusetts · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healy |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 15
Middlesex, Massachusetts · implied b. ~1905 — 9 household members
| Surname | Healey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 Healey across 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Healey
Daughter · 1920 · age 15 · b. ~1905 · Massachusetts
★ You are viewing this record
Sibling
Katherine Healey
Sibling · 1920 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Healey
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Healey
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Healey
Sibling · 1920 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Healey
Sibling · 1920 · age 12
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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu714unit:0899)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clemmer, Stuart | 2 | Son | — | Massachusetts |
| 2 | Charlotte | 69 | Head | — | Ohio |
| 3 | Alice B | 68 | Wife | — | Ireland |
| 4 | Mary A Jones | 72 | Boarder | — | New Hampshire |
| 5 | John R. Casey | 59 | Head | Salesman | Ireland |
| 6 | Mildred Casey | 26 | daughter | Milliner | Massachusetts |
| 7 | Barbara Casey | 16 | daughter | None | Massachusetts |
| 8 | Michael Donohue | 37 | Head | Fireman | Ireland |
| 9 | Katherine Donohue | 30 | Wife | None | Ireland |
| 10 | Margaret Donohue | 9 | daughter | None | Massachusetts |
| 11 | Mary Donohue | 7 | daughter | None | Massachusetts |
| 12 | Alice Donohue | 4 | daughter | None | Massachusetts |
| 13 | Peter Norton | 28 | Boarder | Laborer | Ireland |
| 14 | John Healey | 40 | Head | Laborer | Ireland |
| 15 | Helen Healey | 50 | Wife | None | Ireland |
| 16 | Katherine Healey | 27 | daughter | None | Massachusetts |
| 17 | James Healey | 20 | son | Laborer | Massachusetts |
| 18 | Daniel Healey | 25 | son | Laborer | Massachusetts |
| 19 | Healey | 18 | son | — | Massachusetts |
| 20 | Nellie Healey | 22 | daughter | Shoemaker | Massachusetts |
| 21 | Mary Healey THIS PERSON | 15 | daughter | None | Massachusetts |
| 22 | Lawrence Healey | 12 | son | None | Massachusetts |
| 23 | John Healey | 9 | adopter | None | Massachusetts |
| 24 | James J. Cannon | 54 | Head | Janitor | Massachusetts |
| 25 | William H Cannon | 19 | son | Clerk | Massachusetts |
| 26 | Frank Cannon | 7 | son | None | Massachusetts |
| 27 | Mrs. Julia De Winter | 67 | housekeeper | House Keeper | Ireland |
| 28 | Michael Hunt | 59 | Head | Stableman | Ireland |
| 29 | Agnes Hunt | 25 | daughter | Laborwoman | Canada |
| 30 | Ambrose Hunt | 19 | son | Electrician | Canada |
| 31 | Francis Hunt | 14 | son | None | Massachusetts |
| 32 | John Hunt | 23 | son | Patrolman | Canada |
| 33 | Vincent Hunt | 21 | son | Commissioner | Canada |
| 34 | John Queensan | 29 | Head | Chauffeur | Massachusetts |
| 35 | Irene Queensan | 26 | Wife | None | Canada |
| 36 | Mary Queensan | 2 | daughter | None | Massachusetts |
| 37 | Charles Queensan | 27 | brother | Chauffeur | Massachusetts |
| 38 | Patrick J O'Brien | 54 | Head | Foreman | Ireland |
| 39 | Ellen O'Brien | 56 | Wife | None | Ireland |
| 40 | Thomas J O'Brien | 29 | son | Claim Agent | Massachusetts |
| 41 | Catherine O'Brien | 24 | daughter | Stenographer | Massachusetts |
| 42 | William O'Brien | 21 | son | Electrician | Massachusetts |
| 43 | Francis O'Brien | 19 | son | None | Massachusetts |
| 44 | James Nestor | 56 | Head | Nightman | Ireland |
| 45 | Bessie Nestor | 50 | Wife | None | Ireland |
| 46 | Joseph Nestor | 21 | son | Bookkeeper | Massachusetts |
| 47 | Lawrence Fitz Patrick | 40 | O | Plumber | Massachusetts |
| 48 | Alice Fitz Patrick | 33 | Wife | None | Massachusetts |
| 49 | Lawrence Fitz Patrick | 10 | son | None | Massachusetts |
| 50 | John Fitz Patrick | 9 | son | None | Massachusetts |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)