MH
Mary Hennessy — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Hennessy across the 1900 and 1910 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1874), then head of a 9-person household.
Age 36
b. ~1874
Female
Spouse
Born: Ireland
Married
1910 Census Record Details
| Census Year | 1910 |
| Location | Middlesex, Massachusetts |
| Surname | Hennessy |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 13 |
| Children Born | 7 |
| Children Living | 7 |
| Year of Immigration | 1894 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Waltham City |
| Est. Birth Year | ~1874 |
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 1910 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Hennessy | Daughter | — | 1 | ~1909 |
| Alice Hennessy | Daughter | — | 4 | ~1906 |
| Irene Hennessy | Daughter | — | 7 | ~1903 |
| John Hennessy | Head | — | 38 | ~1872 |
| William Hennessy | Son | — | 11 | ~1899 |
| Mary Hennessy | Spouse | — | 36 | ~1874 |
| Mary Hennessy | Daughter | — | 13 | ~1897 |
| John Hennessy | Son | — | 3 | ~1907 |
| Katherine Hennessy | Daughter | — | 9 | ~1901 |
Census Appearances
1900
Suffolk, Massachusetts
Spouse, age 26
Suffolk, Massachusetts · implied b. ~1874 — 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 | 25 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Aug |
| Birth Year | 1874 |
| Year of Immigration | 1893 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Middlesex, Massachusetts
Spouse, age 36
Middlesex, Massachusetts · implied b. ~1874 — 9 household members
| Surname | Hennessy |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 13 |
| Children Born | 7 |
| Children Living | 7 |
| Year of Immigration | 1894 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Hennessy across 2 US Census years (1900 and 1910) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hennessy
Spouse · 1910 · age 36 · b. ~1874 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1910 US Federal Census — Middlesex, Massachusetts
Open full size
1910 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po606unit:0516)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Henry Connors | 8 | son | None | Massachusetts |
| 52 | Katherine Connors | 7 | daughter | None | Massachusetts |
| 53 | Fred Connors | 5 | son | None | Massachusetts |
| 54 | Mary Connors | 3 | daughter | None | Massachusetts |
| 55 | Josephine Connors | 3 | daughter | None | Massachusetts |
| 56 | John Whalen | 32 | head | Moulder | England |
| 57 | Ada Whalen | 33 | wife | None | England |
| 58 | Timothy Hayes | 51 | head | Painter | Ireland |
| 59 | Katherine Hayes | 45 | wife | None | Ireland |
| 60 | Harry Hayes | 23 | son | Stenographer | Massachusetts |
| 61 | John Hayes | 21 | son | Stenographer | Massachusetts |
| 62 | Katherine Hayes | 13 | daughter | None | Massachusetts |
| 63 | John Coleman | 30 | head | Salesman | Massachusetts |
| 64 | Minnie Coleman | 26 | wife | None | Massachusetts |
| 65 | Mary Coleman | 2 | daughter | None | Massachusetts |
| 66 | Thomas Monahan | 26 | boarder | Laborer | Ireland |
| 67 | Edward Coleman | 57 | head | Laborer | Ireland |
| 68 | Annie Coleman | 57 | wife | None | Ireland |
| 69 | Edward Coleman | 30 | son | Watchworker | Massachusetts |
| 70 | Mary Whalen | 44 | head | None | Ireland |
| 71 | Annie Whalen | 26 | daughter | Spinner | Massachusetts |
| 72 | Josephine Whalen | 23 | daughter | Watchworker | Massachusetts |
| 73 | Edward Pratt | 35 | head | Teamster | Canada English |
| 74 | Margaret Pratt | 37 | wife | None | Canada English |
| 75 | Katherine Pratt | 16 | daughter | Drawer | Massachusetts |
| 76 | Mary Pratt | 14 | daughter | None | Massachusetts |
| 77 | Georgiana Pratt | 11 | daughter | None | Massachusetts |
| 78 | Frederick Pratt | 10 | son | None | Massachusetts |
| 79 | William Pratt | 7 | son | None | Massachusetts |
| 80 | Harry Pratt | 6 | son | None | Massachusetts |
| 81 | Irene Pratt | 5 | daughter | None | Massachusetts |
| 82 | Florence Pratt | 2 | daughter | None | Massachusetts |
| 83 | John Hennessy | 38 | head | Laborer | Ireland |
| 84 | Mary Hennessy THIS PERSON | 36 | wife | None | Ireland |
| 85 | Mary Hennessy | 13 | daughter | None | Massachusetts |
| 86 | William Hennessy | 11 | son | None | Massachusetts |
| 87 | Katherine Hennessy | 9 | daughter | None | Massachusetts |
| 88 | Irene Hennessy | 7 | daughter | None | Massachusetts |
| 89 | Alice Hennessy | 4 | daughter | None | Massachusetts |
| 90 | John Hennessy | 3 | son | None | Massachusetts |
| 91 | Margaret Hennessy | 1 | daughter | None | Massachusetts |
| 92 | John Burke | 30 | head | Clerk | Massachusetts |
| 93 | Michael J Burke | 27 | brother | Machinist | Massachusetts |
| 94 | Maria Burke | 34 | sister | None | Massachusetts |
| 95 | Patrick Cahill | 32 | boarder | Laborer | Ireland |
| 96 | John Griffin | 62 | head | Laborer | Ireland |
| 97 | Mary E Griffin | 28 | daughter | None | Massachusetts |
| 98 | James Griffin | 27 | son | Clerk | Massachusetts |
| 99 | Margaret Griffin | 21 | daughter | Clerk | Massachusetts |
| 100 | Sabina Flannery | 47 | head | None | Ireland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1910 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)