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Mary Mckenzie — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Mckenzie across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 9-person household.
Age 8
b. ~1922
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | McKenzie |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada English |
| Additional Details | |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford City |
| Est. Birth Year | ~1922 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rodrick Mckenzie | Son | — | 13 | ~1917 |
| Roy Mckenzie | Head | — | 37 | ~1893 |
| Annie Mckenzie | Daughter | — | 16 | ~1914 |
| Thomas Mckenzie | Son | — | 14 | ~1916 |
| Mary Mckenzie | Daughter | — | 8 | ~1922 |
| George Mckenzie | Son | — | 9 | ~1921 |
| Gordon Mckenzie | Son | — | 10 | ~1920 |
| Lillian Mckenzie | Daughter | — | 7 | ~1923 |
| Violet Mckenzie | Daughter | — | 12 | ~1918 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 8
Middlesex, Massachusetts · implied b. ~1922 — 9 household members
| Surname | McKenzie |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Canada English |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 19
Middlesex-County, Massachusetts · implied b. ~1921 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenzie |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Class of Worker | S |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| 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 Mckenzie across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckenzie
Daughter · 1930 · age 8 · b. ~1922 · Massachusetts
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Sibling
Gordon Mckenzie
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rodrick Mckenzie
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mckenzie
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mckenzie
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Mckenzie
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Violet Mckenzie
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Mckenzie
Sibling · 1930 · age 16
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:massachusettscensus00reel924:0631)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Olivia Scott | 15 | Daughter | None | Massachusetts |
| 2 | Doris Scott | 13 | Daughter | None | Massachusetts |
| 3 | Andrew Jr Scott | 9 | Son | None | Massachusetts |
| 4 | Nellie Scott | 4 | Daughter | None | Massachusetts |
| 5 | James Mcconnell | 46 | Head | Foreman | Massachusetts |
| 6 | Margaret Mcconnell | 46 | Wife-H | None | Massachusetts |
| 7 | James E Mcconnell | 21 | Son | Clerk | Massachusetts |
| 8 | Louise Mcconnell | 17 | Daughter | None | Massachusetts |
| 9 | Rita Mcconnell | 15 | Daughter | None | Massachusetts |
| 10 | Ruth Mcconnell | 6 | Daughter | None | Massachusetts |
| 11 | Joseph Mcconnell | 4 | Son | None | Massachusetts |
| 12 | Walter H Adey | 26 | Head | Carpenter | Newfoundland |
| 13 | Anastasia Adey | 27 | Wife-H | None | Newfoundland |
| 14 | Barbara Butler | 17 | Sister-in-law | General Maid | Newfoundland |
| 15 | George W Palmer | 37 | Head | Woodworker | Massachusetts |
| 16 | Louisa A Palmer | 56 | Mother-H | None | Massachusetts |
| 17 | Edward L Palmer | 16 | Brother | None | Massachusetts |
| 18 | Pascal B Bruden | 50 | Head | Veterinarian | Tennessee |
| 19 | Beatrice Bruden | 38 | Wife-H | None | England |
| 20 | William Bruden | 13 | Son | None | District of Columbia |
| 21 | Reginald Bruden | 12 | Son | None | District of Columbia |
| 22 | Beatrice Bruden | 10 | Daughter | None | Massachusetts |
| 23 | Lillian Bruden | 7 | Daughter | None | Massachusetts |
| 24 | Audrey J Bruden | 4 | Daughter | None | Massachusetts |
| 25 | Paul B Bruden | 3 | Son | None | Massachusetts |
| 26 | Frank Dennen | 35 | Head | Salesman | Massachusetts |
| 27 | Ethel Dennen | 33 | Wife-H | None | England |
| 28 | Vincent Dennen | 14 | Son | None | Massachusetts |
| 29 | John Dennen | 12 | Son | None | Massachusetts |
| 30 | Stanley Dennen | 7 | Son | None | Massachusetts |
| 31 | William Warren | 41 | Head | Laborer | Canada English |
| 32 | Georgia V Warren | 41 | Wife-H | None | Canada English |
| 33 | Curtis Warren | 16 | Son | None | Massachusetts |
| 34 | Earl Warren | 14 | Son | None | Massachusetts |
| 35 | Phyllis Warren | 12 | Daughter | None | Massachusetts |
| 36 | Jean Warren | 10 | Daughter | None | Massachusetts |
| 37 | Alice Warren | 8 | Daughter | None | Massachusetts |
| 38 | Barbara Warren | 6 | Daughter | None | Massachusetts |
| 39 | William Jr Warren | 4 | Son | None | Massachusetts |
| 40 | Roy E Mckenzie | 37 | Head | Fruit Cutter | Massachusetts |
| 41 | Annie E Mckenzie | 16 | Daughter | None | Massachusetts |
| 42 | Thomas Mckenzie | 14 | Son | None | Massachusetts |
| 43 | Rodrick Mckenzie | 13 | Son | None | Massachusetts |
| 44 | Violet Mckenzie | 12 | Daughter | None | Massachusetts |
| 45 | Gordon Mckenzie | 10 | Son | None | Massachusetts |
| 46 | George E Mckenzie | 9 | Son | None | Massachusetts |
| 47 | Mary Mckenzie THIS PERSON | 8 | Daughter | None | Massachusetts |
| 48 | Lillian Mckenzie | 7 | Daughter | None | Massachusetts |
| 49 | John F Leonard | 28 | Head | Accountant | Massachusetts |
| 50 | Ruth M Leonard | 26 | Wife-H | None | 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)