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Mary Lennon — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Lennon across the 1900 and 1910 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1866), then head of a 8-person household.
Age 34
b. ~1866
Female
Spouse
Born: Ireland
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Middlesex, Massachusetts |
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Apr |
| Birth Year | 1866 |
| Year of Immigration | 1883 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | City Of Somerville |
| Est. Birth Year | ~1866 |
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 1900 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lennon | Spouse | — | 34 | ~1866 |
| Catherine Lennon | Daughter | — | ~1900 | |
| Daniel Lennon | Son | — | 3 | ~1897 |
| Katherine Lennon | Daughter | — | 11 | ~1889 |
| James Lennon | Head | — | 36 | ~1864 |
| Elizabeth Lennon | Daughter | — | 7 | ~1893 |
| Gertrude Lennon | Daughter | — | 6 | ~1894 |
| Dennis Lennon | Son | — | 9 | ~1891 |
Census Appearances
1900
Middlesex, Massachusetts
Spouse, age 34
Middlesex, Massachusetts · implied b. ~1866 — 8 household members
| Surname | Lennon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Apr |
| Birth Year | 1866 |
| Year of Immigration | 1883 |
| 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 42
Middlesex, Massachusetts · implied b. ~1868 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lennon |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 17 |
| Children Born | 5 |
| Children Living | 4 |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Lennon across 2 US Census years (1900 and 1910) in Middlesex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Mary Lennon
Spouse · 1900 · age 34 · b. ~1866 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Middlesex, Massachusetts
Open full size
1900 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu665unit:0295)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Gregory Lunder | 23 | Son | — | Massachusetts |
| 52 | James Lennon | 36 | Head | Laborer | Ireland |
| 53 | Mary Lennon THIS PERSON | 34 | Wife | — | Ireland |
| 54 | Katherine E Lennon | 10 | Daughter | At School | Massachusetts |
| 55 | Dennis P Lennon | 8 | Son | At School | Massachusetts |
| 56 | Elizabeth A Lennon | 7 | Daughter | At School | Massachusetts |
| 57 | Gertrude Lennon | 5 | Daughter | At School | Massachusetts |
| 58 | Daniel F Lennon | 3 | Son | — | Massachusetts |
| 59 | Catherine V Lennon | None | Daughter | — | Massachusetts |
| 60 | James J Lennon | 45 | Head | Painter | Ireland |
| 61 | Margaret Lennon | 64 | Wife | — | Ireland |
| 62 | Michael Cassidy | 25 | Head | Day Laborer | Ireland |
| 63 | Mary Cassidy | 30 | Wife | — | Ireland |
| 64 | Mary E Cassidy | 2 | Daughter | — | Ireland |
| 65 | Elizabeth Cassidy | None | Daughter | — | Ireland |
| 66 | James Nagle | 33 | Head | Day Laborer | Ireland |
| 67 | Mary Nagle | 37 | Wife | — | Ireland |
| 68 | John E Nagle | 7 | Son | Student | Massachusetts |
| 69 | James F Nagle | 5 | Son | At School | Massachusetts |
| 70 | Nellie E Nagle | 4 | Daughter | — | Massachusetts |
| 71 | Joseph C Nagle | 2 | Son | — | Massachusetts |
| 72 | William C Nagle | None | Son | — | Massachusetts |
| 73 | Michael Lannahan | 30 | Head | Pork Packer | Ireland |
| 74 | Mary Lannahan | 27 | Wife | — | Canada (Fr) |
| 75 | Joseph J Lannahan | 2 | Son | — | Massachusetts |
| 76 | Mary G Lannahan | None | Daughter | — | Massachusetts |
| 77 | Mary Sharkey | 61 | Head | Washerwoman | Ireland |
| 78 | John Sharkey | 21 | Son | Freight Handler | Massachusetts |
| 79 | John Heffernan | 48 | Head | Teamster | Ireland |
| 80 | Delia Heffernan | 47 | Wife | — | Ireland |
| 81 | Mary Heffernan | 23 | Daughter | — | Massachusetts |
| 82 | Thomas Cullen | 50 | Head | Cooper | Canada (Eng) |
| 83 | Margaret Cullen | 52 | Wife | — | Canada (Eng) |
| 84 | David Cody | 20 | Cousin | Belt Maker | Canada (Eng) |
| 85 | William Lambert | 40 | Head | Day Laborer | Ireland |
| 86 | Rose Lambert | 39 | Wife | — | Ireland |
| 87 | William Lambert | 18 | Son | Laborer Slaughter House | Massachusetts |
| 88 | John Lambert | 16 | Son | At School | Massachusetts |
| 89 | Mary Lambert | 11 | Daughter | At School | Massachusetts |
| 90 | John Murray | 34 | Head | Day Laborer | Ireland |
| 91 | Bridget Murray | 36 | Wife | — | Ireland |
| 92 | Mary Murray | 7 | Daughter | At School | Massachusetts |
| 93 | Margaret Murray | 4 | Daughter | — | Massachusetts |
| 94 | Rosanna Murray | 1 | Daughter | — | Massachusetts |
| 95 | James Murphy | 22 | Boarder | Servant | Ireland |
| 96 | Annie Murphy | 18 | Niece | — | Ireland |
| 97 | John Halloran | 38 | Head | Day Laborer | Ireland |
| 98 | Lizzie Halloran | 47 | Wife | — | Ireland |
| 99 | Jennie Blute | 24 | Stepdaughter | — | Massachusetts |
| 100 | Michael H Blute | 22 | Stepson | Clerk Plumber | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)