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Mary Mckenzie — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Mckenzie across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1916), then head of a 8-person household.
Age 14
b. ~1916
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | McKenzie |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Student |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Student |
| Township / Ward | Boston City |
| Est. Birth Year | ~1916 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mckenzie | Daughter | — | 14 | ~1916 |
| Francis Mckenzie | Head | — | 47 | ~1883 |
| Edna Mckenzie | Daughter | — | 16 | ~1914 |
| Margaret Mckenzie | Daughter | — | 7 | ~1923 |
| Elizabeth Mckenzie | Spouse | — | 43 | ~1887 |
| John Mckenzie | Son | — | 8 | ~1922 |
| Francis Mckenzie | Son | — | 10 | ~1920 |
| Dorothy Mckenzie | Daughter | — | 17 | ~1913 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 14
Suffolk, Massachusetts · implied b. ~1916 — 8 household members
| Surname | McKenzie |
| Given Name | Mary C |
| 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 | Student |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 24
Suffolk-County, Massachusetts · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacKenzie |
| Given Name | Margaret G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Hours Worked | 44 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 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 14 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Dorothy Mckenzie
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Mckenzie
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mckenzie
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mckenzie
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mckenzie
Sibling · 1930 · age 8
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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel949:0262)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J Darthy | 16 | Son | Student | Massachusetts |
| 2 | Catherine Darthy | 20 | Daughter | Student | Massachusetts |
| 3 | Ann B Darthy | 13 | Daughter | Student | Massachusetts |
| 4 | Charles J O'Keefe | 55 | Head | Printer | Massachusetts |
| 5 | Susan E O'Keefe | 49 | Wife | — | Massachusetts |
| 6 | Charles E O'Keefe | 22 | Son | Printer | Massachusetts |
| 7 | Mary E O'Keefe | 20 | Daughter | Clerk | Massachusetts |
| 8 | Arthur L O'Keefe | 17 | Son | Student | Massachusetts |
| 9 | Florence E O'Keefe | 15 | Daughter | Student | Massachusetts |
| 10 | Walter O'Keefe | 12 | Son | Student | Massachusetts |
| 11 | Edward O'Keefe | 4 | Son | — | Massachusetts |
| 12 | Catherine Horgan | 48 | Head | — | Massachusetts |
| 13 | Mary E Horgan | 20 | Daughter | Clerk | Massachusetts |
| 14 | Catherine E Horgan | 19 | Daughter | Clerk | Massachusetts |
| 15 | John J Horgan | 17 | Son | Clerk | Massachusetts |
| 16 | Jane Horgan | 14 | Daughter | Student | Massachusetts |
| 17 | Margaret Horgan | 13 | Daughter | Student | Massachusetts |
| 18 | James Horgan | 8 | Son | — | Massachusetts |
| 19 | Cornelius O'Neil | 58 | Head | Watchman | Massachusetts |
| 20 | Margaret T O'Neil | 54 | Sister | — | Irish Free State |
| 21 | Ellen C O'Neil | 50 | Sister | Cashier | Irish Free State |
| 22 | Jenney Brown | 77 | Head | — | Vermont |
| 23 | Anna F Burnside | 57 | Roomer | Cashier | Vermont |
| 24 | Patrick J O'Neil | 50 | Head | Dealer | Irish Free State |
| 25 | Mary H O'Neil | 49 | Wife | — | Massachusetts |
| 26 | Mary J O'Neil | 18 | Daughter | — | Massachusetts |
| 27 | Joseph P O'Neil | 14 | Son | Student | Massachusetts |
| 28 | John H O'Neil | 12 | Son | Student | Massachusetts |
| 29 | Francis Mckenzie | 47 | Head | Clerk | Massachusetts |
| 30 | Elizabeth F Mckenzie | 43 | Wife | — | Massachusetts |
| 31 | Dorothy E Mckenzie | 17 | Daughter | — | Massachusetts |
| 32 | Edna L Mckenzie | 16 | Daughter | — | Massachusetts |
| 33 | Mary C Mckenzie THIS PERSON | 14 | Daughter | Student | Massachusetts |
| 34 | Francis Mckenzie | 10 | Son | Student | Massachusetts |
| 35 | John R Mckenzie | 8 | Son | — | Massachusetts |
| 36 | Margaret H Mckenzie | 7 | Daughter | — | Massachusetts |
| 37 | James Scannell | 63 | Head | Laborer | Irish Free State |
| 38 | Bridget Scannell | 62 | Wife | — | Irish Free State |
| 39 | Daniel B Scannell | 33 | Son | Clerk | Massachusetts |
| 40 | Frederick A Kearney | 53 | Head | Floorman | Irish Free State |
| 41 | Alice C Kearney | 43 | Wife | — | Irish Free State |
| 42 | Sara Hugley | 65 | Mother in law | — | Irish Free State |
| 43 | Margaret J Deegan | 41 | Roomer | Domestic | Canada English |
| 44 | Ella Duff | 43 | Roomer | Physician | Canada English |
| 45 | Sophia Butterfield | 75 | Roomer | — | Vermont |
| 46 | Catherine Hennessy | 28 | Roomer | Reg Nurse | Pennsylvania |
| 47 | John A Burgess | 46 | Head | Teacher | Massachusetts |
| 48 | Augusta Burgess | 40 | Wife | — | Massachusetts |
| 49 | Martha Burgess | 4 | Daughter | — | Massachusetts |
| 50 | John J Jr Burgess | 2 | Son | — | Massachusetts |
Related Census Records
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)