MH
Mary Hennessey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Hennessey across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 8-person household.
Age 43
b. ~1897
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Hennessey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Forelady |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 684 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Forelady |
| Township / Ward | Chelsea City |
| Est. Birth Year | ~1897 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Donald Hennessey | Son | — | 12 | ~1928 |
| Frank Hennessey | Head | — | 46 | ~1894 |
| Mary Hennessey | Spouse | — | 43 | ~1897 |
| Irene Hennessey | Daughter | — | 15 | ~1925 |
| Jessie Hennessey | Daughter | — | 19 | ~1921 |
| Frank Hennessey | Son | — | 17 | ~1923 |
| David Hennessey | Son | — | 12 | ~1928 |
| Maria Hennessey | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Suffolk, Massachusetts
Spouse, age 31
Suffolk, Massachusetts · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | England |
| Mother's Birthplace | Maine |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Spouse, age 43
Suffolk-County, Massachusetts · implied b. ~1897 — 8 household members
| Surname | Hennessey |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea city |
| 1935 Residence (County) | Suffolk |
| Occupation | Forelady |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 684 |
| Highest Grade | No 8 |
| 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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hennessey
Spouse · 1940 · age 43 · b. ~1897 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01642-00302)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Cataldo | 42 | Head | Salesman | Italy |
| 2 | Elizabeth Cataldo | 40 | Wife | — | Ireland (Eire) |
| 3 | Mary Cataldo | 13 | Daughter | — | Massachusetts |
| 4 | Frederic Jr. Cataldo | 12 | Son | — | Massachusetts |
| 5 | William Cataldo | 9 | Son | — | Massachusetts |
| 6 | Robert Cataldo | 5 | Son | — | Massachusetts |
| 7 | Albert Cataldo | 33 | Brother | Carpenter | Italy |
| 8 | Percy Read | 44 | Head | Truck Driver | Massachusetts |
| 9 | Evelyn Read | 41 | Wife | — | Massachusetts |
| 10 | Evelyn Jr. Read | 9 | Daughter | — | Massachusetts |
| 11 | Catherine Siggins | 68 | Mother-in-law | — | New Brunswick |
| 12 | Albert Martuoli | 32 | Head | Salesman | Massachusetts |
| 13 | Ida Martuoli | 27 | Wife | — | Massachusetts |
| 14 | Joseph Camillieri | 53 | Head | Painter | Italy |
| 15 | Mary Camillieri | 53 | Wife | — | Italy |
| 16 | Frank Camillieri | 26 | Son | Painter | Massachusetts |
| 17 | Irene Camillieri | 12 | Daughter | — | Nova Scotia |
| 18 | Frank Camillieri | 1 | Grandson | — | Massachusetts |
| 19 | Mary Camillieri | 0 | Granddaughter | — | Massachusetts |
| 20 | William Marchese | 29 | Son-in-law | Presser | Massachusetts |
| 21 | Angelina Marchese | 29 | Daughter | — | Massachusetts |
| 22 | Mary Marchese | 9 | Granddaughter | — | Massachusetts |
| 23 | Frank E. Hennessey | 46 | Head | Releaser | Massachusetts |
| 24 | Mary Hennessey THIS PERSON | 43 | Wife | Forelady | Massachusetts |
| 25 | Jessie Hennessey | 19 | Daughter | — | Massachusetts |
| 26 | Frank Hennessey | 17 | Son | — | Massachusetts |
| 27 | Irene Hennessey | 15 | Daughter | — | Massachusetts |
| 28 | David Hennessey | 12 | Son | — | Massachusetts |
| 29 | Donald Hennessey | 12 | Son | — | Massachusetts |
| 30 | Maria Hennessey | 5 | Daughter | — | Massachusetts |
| 31 | Raymond J. Harney | 47 | Head | Cook | Massachusetts |
| 32 | Ella Harney | 44 | Wife | — | Massachusetts |
| 33 | John H. Harney | 26 | Son | Counter Man | Massachusetts |
| 34 | Raymond Jr. Harney | 23 | Son | — | Massachusetts |
| 35 | Elena Harney | 21 | Daughter | Illumination | Massachusetts |
| 36 | Robert Harney | 19 | Son | Counterman | Massachusetts |
| 37 | Alice Harney | 17 | Daughter | — | Massachusetts |
| 38 | Edward C. Harney | 14 | Son | — | Massachusetts |
| 39 | Lela Harney | 12 | Daughter | — | Massachusetts |
| 40 | Lois Harney | 12 | Daughter | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)