MM
Mary Mckenzie — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Jefferson, Alabama
Our Model Tree links this Mary Mckenzie across the 1930 and 1940 US Censuses in Jefferson, Alabama (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 8-person household.
Age 16
b. ~1914
Female
Daughter
Born: Alabama
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Jefferson, Alabama |
| Surname | McKenzie |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Florida |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Birmingham City |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| Irvin Mckenzie | Son | — | 8 | ~1922 |
| Lillian Mckenzie | Daughter | — | 5 | ~1925 |
| Mary Mckenzie | Daughter | — | 16 | ~1914 |
| William Mckenzie | Son | — | 18 | ~1912 |
| Lillian Mckenzie | Other | — | 43 | ~1887 |
| James Mckenzie | Head | — | 52 | ~1878 |
| John Mckenzie | Son | — | 14 | ~1916 |
| Charles Mckenzie | Son | — | 20 | ~1910 |
Census Appearances
1930
Jefferson, Alabama
Daughter, age 16
Jefferson, Alabama · implied b. ~1914 — 8 household members
| Surname | McKenzie |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Florida |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Daughter, age 27
Jefferson-County, Alabama · implied b. ~1913 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKenzie |
| Given Name | Margarette |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Precinct 41 |
| 1935 Residence (County) | Jefferson |
| Occupation | Housekeeper |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 500 |
| Highest Grade | No 5 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 16 · b. ~1914 · Alabama
★ You are viewing this record
Sibling
Irvin Mckenzie
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mckenzie
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mckenzie
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mckenzie
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Mckenzie
Sibling · 1930 · age 5
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 — Jefferson, Alabama
Open full size
1930 US Federal Census — Jefferson, Alabama
Page Contents
50 people indexed on this census page (ia:1930:15thcensus29usce:0928)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Jesse Johnston | 18 | Son | Messenger Boy | Alabama |
| 52 | Marshall Johnston | 17 | Son | Salesboy | Alabama |
| 53 | Mark Johnston | 15 | Son | — | Alabama |
| 54 | Roselle Johnston | 13 | Daughter | — | Alabama |
| 55 | Mary P Johnston | 11 | Daughter | — | Alabama |
| 56 | James S Shirley | 40 | Head | Electrician | Alabama |
| 57 | Carrie Shirley | 30 | Wife-H | — | Alabama |
| 58 | Jewel Shirley | 17 | Daughter | Wrapper | Alabama |
| 59 | Iva V Shirley | 13 | Daughter | — | Alabama |
| 60 | Mary G Shirley | 7 | Daughter | — | Alabama |
| 61 | Frances E Shirley | 2 | Daughter | — | Alabama |
| 62 | Houston S Looney | 13 | Stepson | Newsboy | Alabama |
| 63 | Clarence C Beverly | 25 | Head | Craneman | Alabama |
| 64 | Lois D Beverly | 24 | Wife-H | — | Alabama |
| 65 | Mary S Beverly | 2 | Daughter | — | Alabama |
| 66 | William M Crunk | 55 | Head | Watchman | Alabama |
| 67 | Lula M Crunk | 32 | Wife-H | — | Alabama |
| 68 | William M Jr Crunk | 5 | Son | — | Alabama |
| 69 | Velma G Crunk | 0 | Daughter | — | Alabama |
| 70 | John R Smith | 47 | Head | Foreman | Mississippi |
| 71 | Viola R Smith | 36 | Wife-H | — | Alabama |
| 72 | Roy R Smith | 19 | Son | Salesman | Alabama |
| 73 | James W Smith | 16 | Son | — | Alabama |
| 74 | Mildred L Smith | 11 | Daughter | — | Alabama |
| 75 | James M Mckenzie | 52 | Head | — | Alabama |
| 76 | Lillian L Mckenzie | 43 | Wife-H | — | Florida |
| 77 | Charles H Mckenzie | 20 | Son | Laborer | Alabama |
| 78 | William E Mckenzie | 18 | Son | Manager | Alabama |
| 79 | Mary E Mckenzie THIS PERSON | 16 | Daughter | — | Alabama |
| 80 | John W Mckenzie | 14 | Son | — | Alabama |
| 81 | Irvin D Mckenzie | 8 | Son | — | Alabama |
| 82 | Lillian R Mckenzie | 5 | Daughter | — | Alabama |
| 83 | Duncan D Wilkins | 52 | Head | Carpenter | Alabama |
| 84 | Jamie M Wilkins | 43 | Wife-H | — | Alabama |
| 85 | Kathleen L Wilkins | 22 | Daughter | Supervisor | Alabama |
| 86 | Carlisle Wilkins | 20 | Son | Switchman | Alabama |
| 87 | Sarah S Wilkins | 17 | Daughter | Check Girl | Alabama |
| 88 | Martha P Wilkins | 13 | Daughter | — | Alabama |
| 89 | John J Wilkins | 12 | Son | — | Alabama |
| 90 | Florence Wilkins | 8 | Daughter | — | Alabama |
| 91 | Fred M Wilkins | 4 | Son | — | Alabama |
| 92 | Samuel P Burns | 56 | Head | Salesman | Alabama |
| 93 | Mary E Burns | 25 | Wife-H | — | Alabama |
| 94 | Mary E Burns | 4 | Daughter | — | Alabama |
| 95 | Samuel P Burns | 2 | Son | — | Alabama |
| 96 | Frances West | 56 | Mother-in-law | — | Georgia |
| 97 | John H Smith | 50 | Head | Carpenter | Alabama |
| 98 | Luvinia Smith | 49 | Wife-H | — | Alabama |
| 99 | Dushue M Lawson | 42 | Head | Carpenter | Alabama |
| 100 | Faye Lawson | 18 | Daughter-H | — | Alabama |
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)