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Mary Mcmahon — 1910 US Census Record
Linked across censuses1910 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Mcmahon across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1900), then head of a 9-person household.
Age 10
b. ~1900
Female
Daughter
Born: Massachusetts
Single
1910 Census Record Details
| Census Year | 1910 |
| Location | Middlesex, Massachusetts |
| Surname | McMahon |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1900 |
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 Mcmahon | Daughter | — | 1 | ~1909 |
| Mary Mcmahon | Daughter | — | 10 | ~1900 |
| Julia Mcmahon | Daughter | — | 7 | ~1903 |
| Jeremiah Mcmahon | Head | — | 43 | ~1867 |
| Thomas Mcmahon | Son | — | 21 | ~1889 |
| George Mcmahon | Son | — | 4 | ~1906 |
| John Mcmahon | Son | — | 19 | ~1891 |
| Jeremiah Mcmahon | Son | — | 15 | ~1895 |
| Delia Mcmahon | Spouse | — | 40 | ~1870 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 10
Middlesex, Massachusetts · implied b. ~1900 — 9 household members
| Surname | McMahon |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Printer |
| Industry | Hand Rubber |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| 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 Mcmahon across 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcmahon
Daughter · 1910 · age 10 · b. ~1900 · Massachusetts
★ You are viewing this record
Sibling
George Mcmahon
Sibling · 1910 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcmahon
Sibling · 1910 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Mcmahon
Sibling · 1910 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcmahon
Sibling · 1910 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeremiah Mcmahon
Sibling · 1910 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mcmahon
Sibling · 1910 · age 1
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
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:1910:13thcensus1910po601unit:0395)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Prince Smith | 39 | Lodger | Wool Sorter | England |
| 2 | Charles Dyson | 47 | Lodger | Weaver | England |
| 3 | William Blank | 32 | Head | Trucker | Ireland |
| 4 | Bridget M Blank | 29 | Wife | — | Ireland |
| 5 | Francis J Blank | 0 | Son | — | Massachusetts |
| 6 | Jeremiah Mcmahon | 43 | Head | Washer | Ireland |
| 7 | Delia Mcmahon | 40 | Wife | — | Ireland |
| 8 | Thomas Mcmahon | 21 | Son | Druggist | Ireland |
| 9 | John Mcmahon | 19 | Son | Paper Box Maker | Massachusetts |
| 10 | Jeremiah Mcmahon | 15 | Son | Washer | Massachusetts |
| 11 | Mary E Mcmahon THIS PERSON | 10 | Daughter | — | Massachusetts |
| 12 | Julia Mcmahon | 7 | Daughter | — | Massachusetts |
| 13 | George Mcmahon | 4 | Son | — | Massachusetts |
| 14 | Margaret Mcmahon | 1 | Daughter | — | Massachusetts |
| 15 | Patrick Sullivan | 33 | Head | Policeman | Ireland |
| 16 | Margaret Sullivan | 30 | Wife | — | Ireland |
| 17 | James Sullivan | 4 | Son | — | Massachusetts |
| 18 | Josephine Sullivan | 3 | Daughter | — | Massachusetts |
| 19 | Joseph Sullivan | 1 | Son | — | Massachusetts |
| 20 | George H Mcelroy | 50 | Head | Mason | Ireland |
| 21 | Mary Mcelroy | 44 | Wife | — | Ireland |
| 22 | John Mcelroy | 27 | Son | Engineer | Massachusetts |
| 23 | Albert Mcelroy | 24 | Son | Shipping | Massachusetts |
| 24 | George Mcelroy | 21 | Son | — | Massachusetts |
| 25 | Esther Mcelroy | 17 | Daughter | Picking Up | Massachusetts |
| 26 | Edward Mcelroy | 15 | Son | — | Massachusetts |
| 27 | Samuel Mcelroy | 25 | Son | Cloth Inspector | Massachusetts |
| 28 | Margaret Lemont | 42 | Head | Weaver | Rhode Island |
| 29 | Robert Lemont | 20 | Son | Gate Tender | New Hampshire |
| 30 | David Mcelroy | 31 | Head | Engineer | Ireland |
| 31 | Ellen Mcelroy | 26 | Wife | — | Ireland |
| 32 | Ellen M Mcelroy | 6 | Daughter | — | Massachusetts |
| 33 | George A Mcelroy | 5 | Son | — | Massachusetts |
| 34 | Josephine Mary Mcelroy | 2 | Daughter | — | Massachusetts |
| 35 | Arthur J Mcelroy | 1 | Son | — | Massachusetts |
| 36 | Frederick Amluta | 28 | Head | Dresser | England |
| 37 | Jenny Amluta | 31 | Wife | — | Massachusetts |
| 38 | Julia Buck | 65 | Head | — | Ireland |
| 39 | Benjamin Buck | 43 | Son | Laborer | Massachusetts |
| 40 | John Farrell | 51 | Head | Spare Hand | Ireland |
| 41 | Anna Farrell | 30 | Daughter | — | Scotland |
| 42 | Owen Farrell | 26 | Son | Salesman | Pennsylvania |
| 43 | Mary Farrell | 22 | Daughter | Spooler | Pennsylvania |
| 44 | Ellen Farrell | 20 | Daughter | Picking Up | Pennsylvania |
| 45 | Margaret Farrell | 17 | Daughter | Stitching | Pennsylvania |
| 46 | Katherine Farrell | 16 | Daughter | Spooler | Pennsylvania |
| 47 | Bessie Farrell | 12 | Daughter | — | Massachusetts |
| 48 | Thomas Farrell | 31 | Head | Spinner | Scotland |
| 49 | Ellen Farrell | 31 | Wife | — | Rhode Island |
| 50 | Mary Farrell | 5 | Daughter | — | Massachusetts |
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)