MH
Mary Hennessey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Hennessey across the 1920, 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 3-person household.
Age 53
b. ~1877
Female
Spouse
Born: Massachusetts
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Hennessey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1877 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Hennessey | Head | — | 54 | ~1876 |
| Thomas Hennessey | Son | — | 14 | ~1916 |
| Mary Hennessey | Spouse | — | 53 | ~1877 |
Census Appearances
1920
Suffolk, Massachusetts
Spouse, age 45
Suffolk, Massachusetts · implied b. ~1875 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessy |
| Given Name | Mary E |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| 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 |
1930
Suffolk, Massachusetts
Spouse, age 53
Suffolk, Massachusetts · implied b. ~1877 — 3 household members
| Surname | Hennessey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Spouse, age 65
Suffolk-County, Massachusetts · implied b. ~1875 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 0 |
| 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 Mary Hennessey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hennessey
Spouse · 1930 · age 53 · b. ~1877 · Massachusetts
★ You are viewing this record
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
46 people indexed on this census page (ia:1930:massachusettscensus00reel959:0161)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Finnick | 68 | Head | — | Ireland |
| 2 | Mary Finnick | 40 | Daughter | Assistant | Massachusetts |
| 3 | Catherine Finnick | 37 | Daughter | Telephone Operator | Massachusetts |
| 4 | William Finnick | 35 | Son | Fireman | Massachusetts |
| 5 | Joseph Finnick | 29 | Son | — | Massachusetts |
| 6 | Margaret Finnick | 27 | Daughter | Examiner | Massachusetts |
| 7 | Alice Finnick | 25 | Daughter | Electrician | Massachusetts |
| 8 | Gertrude Finnick | 21 | Daughter | Telephone Operator | Massachusetts |
| 9 | Patrick Doherty | 39 | Head | Custodian | Ireland |
| 10 | Mary Doherty | 30 | Wife | — | Ireland |
| 11 | Alice Doherty | 6 | Daughter | — | Massachusetts |
| 12 | Rita Doherty | 4 | Daughter | — | Massachusetts |
| 13 | John Doherty | 2 | Son | — | Massachusetts |
| 14 | Catherine Doherty | 1 | Daughter | — | Massachusetts |
| 15 | Mary Doherty | 0 | Daughter | — | Massachusetts |
| 16 | William Doherty | 35 | Brother | Stationary Eng | Ireland |
| 17 | Peter Doherty | 28 | Brother | Laborer | Ireland |
| 18 | Neil Doherty | 26 | Brother | Fireman | Ireland |
| 19 | Mary Donovan | 41 | Head | — | Massachusetts |
| 20 | Dorothy Donovan | 3 | Daughter | — | Massachusetts |
| 21 | John Donovan | 1 | Son | — | Massachusetts |
| 22 | Thomas Hennessey | 54 | Head | Maintenance | Ireland |
| 23 | Mary Hennessey THIS PERSON | 53 | Wife | — | Massachusetts |
| 24 | Thomas Hennessey | 14 | Son | — | Massachusetts |
| 25 | James Driscoll | 51 | Head | — | Ireland |
| 26 | Mary Driscoll | 46 | Wife | — | Massachusetts |
| 27 | Dorothy Driscoll | 22 | Daughter | Stenographer | Massachusetts |
| 28 | Catherine Driscoll | 21 | Daughter | Examiner | Massachusetts |
| 29 | Alice Driscoll | 17 | Daughter | Mechanic | Massachusetts |
| 30 | Mildred Driscoll | 12 | Daughter | — | Massachusetts |
| 31 | James Driscoll | 10 | Son | — | Massachusetts |
| 32 | Rita Driscoll | 6 | Daughter | — | Massachusetts |
| 33 | Thomas Mcdonough | 46 | Head | Laborer | Ireland |
| 34 | Anna Mcdonough | 47 | Wife | — | Ireland |
| 35 | Edward Mcdonough | 17 | Son | Secretary | Massachusetts |
| 36 | Gertrude Mcdonough | 12 | Daughter | — | Massachusetts |
| 37 | William Keane | 35 | Head | Gardener | Ireland |
| 38 | Sarah Keane | 28 | Wife | — | Massachusetts |
| 39 | William J. Keane | 2 | Son | — | Massachusetts |
| 40 | John F. Keane | 1 | Son | — | Massachusetts |
| 41 | Michael Donahue | 44 | Head | Road Master | Ireland |
| 42 | Mary Donahue | 32 | Wife | — | Massachusetts |
| 43 | Theresa Donahue | 7 | Daughter | — | Massachusetts |
| 44 | Agnes Donahue | 3 | Daughter | — | Massachusetts |
| 45 | Emily Hall | 50 | Head | Housekeeper | Maine |
| 46 | Elizabeth Hall | 56 | Sister | — | Maine |
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)