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Mary Macdonald — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Macdonald across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1902), then head of a 10-person household.
Age 28
b. ~1902
Female
Daughter
Born: Canada English
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | MacDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Canada English |
| Naturalization Status | Alien |
| Year of Immigration | 1902 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
| Township / Ward | Watertown Town |
| Est. Birth Year | ~1902 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Florence Macdonald | Daughter | — | 23 | ~1907 |
| Daniel Macdonald | Son | — | 26 | ~1904 |
| Angus Macdonald | Son | — | 25 | ~1905 |
| William Macdonald | Son | — | 14 | ~1916 |
| Marcella Macdonald | Daughter | — | 17 | ~1913 |
| Mary Macdonald | Daughter | — | 28 | ~1902 |
| Margaret Macdonald | Daughter | — | 22 | ~1908 |
| Donald Macdonald | Son | — | 6 | ~1924 |
| Elizabeth Macdonald | Daughter | — | 19 | ~1911 |
| William Macdonald | Head | — | 59 | ~1871 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 18
Middlesex, Massachusetts · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Macdonald |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Canada English |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Occupation | Stenographer |
| Industry | Automobile Dealer |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
1930
Middlesex, Massachusetts
Daughter, age 28
Middlesex, Massachusetts · implied b. ~1902 — 10 household members
| Surname | MacDonald |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Canada English |
| Naturalization Status | Alien |
| Year of Immigration | 1902 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
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 Macdonald across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Macdonald
Daughter · 1930 · age 28 · b. ~1902 · Massachusetts
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Sibling
Elizabeth Macdonald
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Macdonald
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Angus Macdonald
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcella Macdonald
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Macdonald
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Macdonald
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Macdonald
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Macdonald
Sibling · 1930 · age 6
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel931:0543)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Alex Jensen | 21 | Son | Laborer | Canada English |
| 52 | John F. Jensen | 16 | Son | Helper | Massachusetts |
| 53 | Thomas Jensen | 15 | Son | — | Massachusetts |
| 54 | Mary A. Jensen | 13 | Daughter | — | Massachusetts |
| 55 | Edith Jensen | 10 | Son | — | Massachusetts |
| 56 | Jean Jensen | 4 | Grand daughter | — | Massachusetts |
| 57 | Lorenzo Bertelli | 53 | Head | — | Italy |
| 58 | Alfred Bertelli | 22 | Son | Laborer | Ohio |
| 59 | Alvina Bertelli | 21 | Daughter | Book Keeper | Ohio |
| 60 | Rose Bertelli | 16 | Daughter | — | Massachusetts |
| 61 | Mary Bertelli | 15 | Daughter | — | Massachusetts |
| 62 | Bernard P. Davis | 31 | Head | Fireman | Massachusetts |
| 63 | Kelsey R. Davis | 21 | Wife | — | Massachusetts |
| 64 | William Macdonald | 59 | Head | Laborer | Canada English |
| 65 | Mary Macdonald THIS PERSON | 28 | Daughter | — | Canada English |
| 66 | Daniel Macdonald | 26 | Son | Steam Laborer | Canada English |
| 67 | Angus Macdonald | 25 | Son | Laborer | Canada English |
| 68 | Florence Macdonald | 23 | Daughter | House Work | Canada English |
| 69 | Margaret Macdonald | 22 | Daughter | House Work | Canada English |
| 70 | Elizabeth Macdonald | 19 | Daughter | House Work | Canada English |
| 71 | Marcella Macdonald | 17 | Daughter | — | Canada English |
| 72 | William Macdonald | 14 | Son | — | Canada English |
| 73 | Donald Macdonald | 6 | Son | — | Canada English |
| 74 | Joseph S. Gallant | 34 | Head | Truck Driver | Canada French |
| 75 | Serena S. Gallant | 29 | Wife | — | Canada English |
| 76 | James Gallant | 5 | Son | — | Massachusetts |
| 77 | Grace E. Gallant | 4 | Daughter | — | Massachusetts |
| 78 | Ruth E. Gallant | 2 | Daughter | — | Massachusetts |
| 79 | Joseph Frederick | 47 | Head | Spinner | Belgium |
| 80 | Louise Frederick | 53 | Wife | — | Belgium |
| 81 | Louise Frederick | 21 | Daughter | Box Maker Paper | Belgium |
| 82 | Leo Frederick | 19 | Son | Helper | Belgium |
| 83 | Ferdinand Frederick | 18 | Son | Helper | Belgium |
| 84 | Arnold Frederick | 16 | Son | Helper | Belgium |
| 85 | Elizabeth Frederick | 14 | Daughter | — | Massachusetts |
| 86 | Frank O'Brien | 61 | Head | — | Massachusetts |
| 87 | Charles J. O'Brien | 70 | Brother | Cattle Dealer | Massachusetts |
| 88 | Elizabeth O'Brien | 66 | Sister | — | Massachusetts |
| 89 | William Shute | 52 | Head | Carpenter | Canada English |
| 90 | Mary E. Shute | 52 | Wife | — | Canada English |
| 91 | M. Elizabeth Shute | 14 | Daughter | — | Canada English |
| 92 | Kenneth Palmer | 31 | Head | Helper | Newfoundland |
| 93 | Bessie Palmer | 31 | Wife | — | Newfoundland |
| 94 | Herbert Webber | 29 | Boarder | Steam Fitter | Newfoundland |
| 95 | Linda Webber | 28 | Boarder | Waitress | Newfoundland |
| 96 | Nelson H. Pollard | 29 | Head | — | Massachusetts |
| 97 | Edith Pollard | 9 | Daughter | — | Massachusetts |
| 98 | Louise Pollard | 5 | Daughter | — | Massachusetts |
| 99 | Harriett Pollard | 2 | Daughter | — | Massachusetts |
| 100 | Louis A. Tanguay | 29 | Head | Chauffeur | Massachusetts |
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)