MD
Margaret Donnelly — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Margaret Donnelly across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1908), then head of a 12-person household.
Age 12
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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 | ~1908 |
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 1920 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Catherine Donnelly | Daughter | — | 8 | ~1912 |
| Arthur Donnelly | Son | — | 1 | ~1919 |
| Catherine Donnelly | Spouse | — | 45 | ~1875 |
| Margaret Donnelly | Daughter | — | 12 | ~1908 |
| Edward Donnelly | Son | — | 15 | ~1905 |
| Leo Donnelly | Son | — | 13 | ~1907 |
| Nicholas Donnelly | Son | — | 17 | ~1903 |
| Frederick Donnelly | Son | — | 2 | ~1918 |
| Christina Donnelly | Daughter | — | 7 | ~1913 |
| William Donnelly | Son | — | 6 | ~1914 |
| Elizabeth Donnelly | Daughter | — | 19 | ~1901 |
| Francis Donnelly | Son | — | 10 | ~1910 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 3
Middlesex, Massachusetts · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 12
Middlesex, Massachusetts · implied b. ~1908 — 12 household members
| Surname | Donnelly |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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 |
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 Donnelly across 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Donnelly
Daughter · 1920 · age 12 · b. ~1908 · Massachusetts
★ You are viewing this record
Sibling
William Donnelly
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Donnelly
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Donnelly
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Donnelly
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Donnelly
Sibling · 1920 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Donnelly
Sibling · 1920 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nicholas Donnelly
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Donnelly
Sibling · 1920 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Donnelly
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Christina Donnelly
Sibling · 1920 · age 7
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:1920:14thcensusofpopu712unit:0955)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Catherine Donnelly | 45 | Wife | — | Ireland |
| 52 | Elizabeth Donnelly | 19 | Daughter | Spinner | Massachusetts |
| 53 | Nicholas Donnelly | 17 | Son | Laborer | Massachusetts |
| 54 | Edward Donnelly | 15 | Son | Sweeper | Massachusetts |
| 55 | Leo Donnelly | 13 | Son | — | Massachusetts |
| 56 | Margaret Donnelly THIS PERSON | 12 | Daughter | — | Massachusetts |
| 57 | Francis Donnelly | 10 | Son | — | Massachusetts |
| 58 | Catherine Donnelly | 8 | Daughter | — | Massachusetts |
| 59 | Christina Donnelly | 7 | Daughter | — | Massachusetts |
| 60 | William Donnelly | 6 | Son | — | Massachusetts |
| 61 | Frederick Donnelly | 2 | Son | — | Massachusetts |
| 62 | Arthur Donnelly | 1 | Son | — | Massachusetts |
| 63 | Dominic Machado | 49 | Head | Oiler | Portugal |
| 64 | Sarah Machado | 42 | Wife | — | Portugal |
| 65 | Adeline Machado | 20 | Daughter | Spinner | Massachusetts |
| 66 | John Machado | 17 | Son | Doffer | Massachusetts |
| 67 | Tony Machado | 13 | Son | — | Massachusetts |
| 68 | Catherine Machado | 10 | Daughter | — | Massachusetts |
| 69 | Bellmere Machado | 7 | Daughter | — | Massachusetts |
| 70 | Sarah Machado | 4 | Daughter | — | Massachusetts |
| 71 | Thomas H. Lee | 37 | Head | Laborer | England |
| 72 | Lucy C. Lee | 35 | Wife | Operator | England |
| 73 | James Riley | 53 | Head | Machine Fixer | Ireland |
| 74 | Nora Riley | 51 | Wife | — | Ireland |
| 75 | William Riley | 27 | Son | Machine Fixer | Massachusetts |
| 76 | Mary Riley | 25 | Daughter | Spooler | Massachusetts |
| 77 | George Riley | 22 | Son | Iron Moulder | Massachusetts |
| 78 | James Riley | 15 | Son | — | Massachusetts |
| 79 | Fred Riley | 13 | Son | — | Massachusetts |
| 80 | Lillian Riley | 11 | Daughter | — | Massachusetts |
| 81 | Martin Mccarthy | 35 | Head | Salesman | Ireland |
| 82 | Mathilda E. Mccarthy | 30 | Wife | — | Canada |
| 83 | Madeline Mccarthy | 6 | Daughter | — | New Hampshire |
| 84 | Lucille Mccarthy | 5 | Daughter | — | New Hampshire |
| 85 | Dorothy Mccarthy | 3 | Daughter | — | Massachusetts |
| 86 | Daniel Mccarthy | 1 | Son | — | Massachusetts |
| 87 | George Mccarthy | 0 | Son | — | Massachusetts |
| 88 | Peter O'Neil | 60 | Head | Carpenter | Massachusetts |
| 89 | Mary O'Neil | 53 | Wife | — | Ireland |
| 90 | Edward O'Neil | 17 | Son | — | Massachusetts |
| 91 | Harry Swan | 45 | Head | Boxmaker | England |
| 92 | Martha Swan | 42 | Wife | — | England |
| 93 | Elsie Swan | 18 | Daughter | Roller | England |
| 94 | George H. Swan | 12 | Son | — | Massachusetts |
| 95 | Doris Swan | 6 | Daughter | — | Massachusetts |
| 96 | Bernard Roche | 43 | Head | Laborer | Massachusetts |
| 97 | Catherine Roche | 43 | Wife | — | Ireland |
| 98 | James H. Roche | 18 | Son | Machinist Helper | Massachusetts |
| 99 | Matthew M. Silva | 47 | Head | Barber | Azore Islands |
| 100 | Mary Silva | 47 | Wife | — | Azore Islands |
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)