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Margaret Mcmahon — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Margaret Mcmahon across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1896), then head of a 9-person household.
Age 24
b. ~1896
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Trimmer |
| Industry | Leather |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Trimmer |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1896 |
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 1920 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Charles Mcmahon | Son | — | 15 | ~1905 |
| Walter Mcmahon | Son | — | 12 | ~1908 |
| Marion Mcmahon | Daughter | — | 19 | ~1901 |
| Frank Mcmahon | Son | — | 14 | ~1906 |
| Margaret Mcmahon | Daughter | — | 24 | ~1896 |
| Mary Mcmahon | Spouse | — | 52 | ~1868 |
| Blanche Mcmahon | Daughter | — | 16 | ~1904 |
| Grace Mcmahon | Daughter | — | 9 | ~1911 |
| Daniel Mcmahon | Head | — | 61 | ~1859 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 14
Middlesex, Massachusetts · implied b. ~1896 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 24
Middlesex, Massachusetts · implied b. ~1896 — 9 household members
| Surname | McMahon |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Trimmer |
| Industry | Leather |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Margaret Mcmahon across 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mcmahon
Daughter · 1920 · age 24 · b. ~1896 · Massachusetts
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Sibling
Blanche Mcmahon
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mcmahon
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Mcmahon
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Mcmahon
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Mcmahon
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Mcmahon
Sibling · 1920 · age 14
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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu720unit:0949)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anna L | 6 | Daughter | None | Massachusetts |
| 52 | Patrick Connolly | 38 | Head | Paperman | Massachusetts |
| 53 | Bessie Connolly | 43 | Wife | None | Ireland |
| 54 | Cross Lanzana | 49 | Head | Laborer | Italy |
| 55 | Lena Lanzana | 42 | Wife | None | Italy |
| 56 | James Lanzana | 17 | Son | None | Italy |
| 57 | Charles Lanzana | 14 | Son | None | Italy |
| 58 | Joseph Lanzana | 10 | Son | None | Italy |
| 59 | John Lanzana | 3 | Son | None | Massachusetts |
| 60 | Tony Lanzana | 0 | Son | None | Massachusetts |
| 61 | Zacharias Maryth | 60 | Head | None | Greece |
| 62 | Erena Maryth | 45 | Wife | None | Greece |
| 63 | George Maryth | 25 | Son | Laborer | Greece |
| 64 | Christy Maryth | 7 | Son | None | Greece |
| 65 | John Lameh | 30 | Boarder | Laborer | Greece |
| 66 | Eustake Rathes | 25 | Boarder | Laborer | Greece |
| 67 | Michael Rathes | 18 | Boarder | Laborer | Greece |
| 68 | Jerry Donovan | 66 | Head | None | Ireland |
| 69 | Elizabeth Donovan | 43 | Sister | Stenographer | Massachusetts |
| 70 | Ellen T Donovan | 46 | Sister | Inspector | Massachusetts |
| 71 | Joseph B Donovan | 33 | Son | Salesman | Massachusetts |
| 72 | George Peters | 36 | Head | Laborer | Greece |
| 73 | Lena Peters | 33 | Wife | None | Greece |
| 74 | Christy Peters | 7 | Son | None | Greece |
| 75 | Mary Peters | 2 | Daughter | None | Massachusetts |
| 76 | Blair Augustine | 51 | Head | Laborer | Kentucky |
| 77 | Mary Augustine | 52 | Wife | None | Virginia |
| 78 | Lewis Banston | 19 | Boarder | Laborer | Massachusetts |
| 79 | Boarder John | None | — | None | Massachusetts |
| 80 | William Gregory | 37 | Head | Machinist | Virginia |
| 81 | Clara Gregory | 37 | Wife | None | Vermont |
| 82 | Dorothy Gregory | 14 | Daughter | None | Massachusetts |
| 83 | Ernest Gregory | 4 | Son | None | Massachusetts |
| 84 | Paul Gregory | 2 | Son | None | Massachusetts |
| 85 | Anthony H Gregory | 2 | Son | None | Massachusetts |
| 86 | Walter Gregory | 6 | Son | None | New York |
| 87 | Daniel Mcmahon | 61 | Head | Flagman | Massachusetts |
| 88 | Mary Mcmahon | 52 | Wife | None | Massachusetts |
| 89 | Margaret Mcmahon THIS PERSON | 24 | Daughter | Trimmer | Massachusetts |
| 90 | Marion Mcmahon | 19 | Daughter | Bookkeeper | Massachusetts |
| 91 | Blanche Mcmahon | 16 | Daughter | Stitcher | Massachusetts |
| 92 | Charles Mcmahon | 15 | Son | None | Massachusetts |
| 93 | Frank Mcmahon | 14 | Son | None | Massachusetts |
| 94 | Walter Mcmahon | 12 | Son | None | Massachusetts |
| 95 | Grace Mcmahon | 9 | Daughter | None | Massachusetts |
| 96 | John Costello | 40 | Head | Laborer | Ireland |
| 97 | Nellie Costello | 35 | Wife | None | Ireland |
| 98 | John J Costello | 11 | Son | None | Massachusetts |
| 99 | Thomas M Costello | 8 | Son | None | Massachusetts |
| 100 | Edward H Costello | 4 | Son | None | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)