MH
Mary Hennessy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Androscoggin, Maine
Our Model Tree links this Mary Hennessy across the 1920 and 1930 US Censuses in Androscoggin, Maine (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 12-person household.
Age 17
b. ~1913
Female
Daughter
Born: Maine
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Androscoggin, Maine |
| Surname | Hennessy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Additional Details | |
| Occupation | Inspector |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Inspector |
| Township / Ward | Lewiston City |
| Est. Birth Year | ~1913 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hennessy | Daughter | — | 17 | ~1913 |
| Bernard Hennessy | Son | — | 24 | ~1906 |
| George Hennessy | Son | — | 12 | ~1918 |
| Irene Hennessy | Daughter | — | 9 | ~1921 |
| Claire Hennessy | Daughter | — | 3 | ~1927 |
| Florence Hennessy | Daughter | — | 5 | ~1925 |
| Minnie Hennessy | Spouse | — | 46 | ~1884 |
| Mildred Hennessy | Daughter | — | 21 | ~1909 |
| Joseph Hennessy | Son | — | 8 | ~1922 |
| Walter Hennessy | Son | — | 19 | ~1911 |
| George Hennessy | Head | — | 46 | ~1884 |
| Janet Hennessy | Daughter | — | 6 | ~1924 |
Census Appearances
1920
Androscoggin, Maine
Daughter, age 7
Androscoggin, Maine · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hennessy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Androscoggin, Maine
Daughter, age 17
Androscoggin, Maine · implied b. ~1913 — 12 household members
| Surname | Hennessy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Inspector |
| Industry | Cotton Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 (1920 and 1930) in Androscoggin, Maine, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hennessy
Daughter · 1930 · age 17 · b. ~1913 · Maine
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Sibling
George Hennessy
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Hennessy
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Hennessy
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hennessy
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janet Hennessy
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Hennessy
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Hennessy
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claire Hennessy
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Hennessy
Sibling · 1930 · age 5
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 — Androscoggin, Maine
Open full size
1930 US Federal Census — Androscoggin, Maine
Page Contents
50 people indexed on this census page (ia:1930:15thcensus827unit:1079)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Poulin | 39 | Head | None | Canada |
| 2 | Christine Poulin | 19 | Daughter | Clerk | Maine |
| 3 | Richard Poulin | 17 | Son | Trimmer | Maine |
| 4 | Elizabeth Poulin | 15 | Daughter | None | Maine |
| 5 | Carroll Poulin | 14 | Son | None | Maine |
| 6 | Theresa Poulin | 11 | Daughter | None | Maine |
| 7 | Robert Giguere | 21 | Son in law | Circulation Man | Maine |
| 8 | Gladys Giguere | 20 | Daughter | Saleslady | Maine |
| 9 | Bernard Malia | 32 | Head | Salesman | Maine |
| 10 | Anna Malia | 27 | Wife | None | Maine |
| 11 | Louis Vaillancourt | 58 | Head | Fireman | Canada French |
| 12 | Arthemise Vaillancourt | 56 | Wife | None | Canada French |
| 13 | Louis Jr Vaillancourt | 33 | Son | Trimmer | Canada French |
| 14 | Arthur Vaillancourt | 30 | Son | Burnisher | Maine |
| 15 | Laura Vaillancourt | 29 | Daughter | None | Maine |
| 16 | Ida Vaillancourt | 28 | Daughter | Stitcher | Maine |
| 17 | Rosanna Vaillancourt | 22 | Daughter | None | Maine |
| 18 | Florida Vaillancourt | 21 | Daughter | Stitcher | Maine |
| 19 | Albert Vaillancourt | 19 | Son | Top Puller | Maine |
| 20 | Yvette Vaillancourt | 16 | Daughter | None | Maine |
| 21 | Emile Vaillancourt | 13 | Son | None | Maine |
| 22 | Ludwig Caouette | 44 | Head | Blacksmith | Maine |
| 23 | Ida Caouette | 39 | Wife | None | Canada French |
| 24 | Armand Caouette | 17 | Son | Laster | Maine |
| 25 | Roger Caouette | 14 | Son | None | Maine |
| 26 | Maurice Caouette | 12 | Son | None | Maine |
| 27 | Catherine Caouette | 74 | Mother | None | Canada French |
| 28 | Arthur Fontaine | 44 | Head | Truck Driver | Maine |
| 29 | Amanda Fontaine | 40 | Wife | None | Canada French |
| 30 | Lucille Fontaine | 19 | Daughter | Stitcher | Maine |
| 31 | Lucien Fontaine | 12 | Son | None | Maine |
| 32 | George Hennessy | 46 | Head | Dyer | Maine |
| 33 | Minnie Hennessy | 46 | Wife | None | Maine |
| 34 | Bernard P Hennessy | 24 | Son | None | Maine |
| 35 | Mildred P Hennessy | 21 | Daughter | Packer | Maine |
| 36 | Walter J Hennessy | 19 | Son | Slasher | Maine |
| 37 | Mary Hennessy THIS PERSON | 17 | Daughter | Inspector | Maine |
| 38 | George Jr Hennessy | 12 | Son | None | Maine |
| 39 | Irene Hennessy | 9 | Daughter | None | Maine |
| 40 | Joseph T Hennessy | 8 | Son | None | Maine |
| 41 | Janet Hennessy | 6 | Daughter | None | Maine |
| 42 | Florence Hennessy | 5 | Daughter | None | Maine |
| 43 | Claire Hennessy | 3 | Daughter | None | Maine |
| 44 | Joseph Frechette | 54 | Head | Watchman | Canada French |
| 45 | Claudia Frechette | 53 | Wife | None | Canada French |
| 46 | Lauretta Frechette | 23 | Daughter | Inspector | Maine |
| 47 | Annie Frechette | 20 | Daughter | Stitcher | Maine |
| 48 | Rosalla Frechette | 17 | Daughter | Stitcher | Maine |
| 49 | William Frechette | 16 | Son | None | Maine |
| 50 | Emile Frechette | 15 | Son | None | 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)