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John Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Butler-County, Ohio
Our Model Tree links this John Mack across the 1930 and 1940 US Censuses in Butler-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Ohio |
| Surname | Mack |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Middletown City |
| 1935 Residence (County) | Butler |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Middletown City |
| Est. Birth Year | ~1925 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eugene Mack | Son | — | 19 | ~1921 |
| Virginia Mack | Daughter | — | 8 | ~1932 |
| Earl Mack | Son | — | 4 | ~1936 |
| Mary Mack | Daughter | — | 9 | ~1931 |
| Thomas Mack | Son | — | 13 | ~1927 |
| Etta Mack | Spouse | — | 43 | ~1897 |
| John Mack | Head | — | 47 | ~1893 |
| Elsie Mack | Daughter | — | 16 | ~1924 |
| Dorothy Mack | Daughter | — | 20 | ~1920 |
| John Mack | Son | — | 15 | ~1925 |
Census Appearances
1930
Butler, Ohio
Son, age 3
Butler, Ohio · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Butler-County, Ohio
Son, age 15
Butler-County, Ohio · implied b. ~1925 — 10 household members
| Surname | Mack |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Middletown City |
| 1935 Residence (County) | Butler |
| Income (1939) | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 John Mack across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mack
Son · 1940 · age 15 · b. ~1925 · Ohio
★ You are viewing this record
Sibling
Earl Mack
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mack
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Mack
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Mack
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mack
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mack
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Mack
Sibling · 1940 · age 19
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
1940 US Federal Census — Butler-County, Ohio
Open full size
1940 US Federal Census — Butler-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03035-00383)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lottie Finney | 42 | Wife | — | Kentucky |
| 42 | William Finney | 18 | Son | Clerk | Ohio |
| 43 | Helen Finney | 17 | Daughter | — | Ohio |
| 44 | Robert Finney | 12 | Son | — | Ohio |
| 45 | Edward T Witherspoon | 48 | Head | Millwright | Tennessee |
| 46 | Robena Witherspoon | 45 | Wife | — | Kentucky |
| 47 | Shirlee Almeda Witherspoon | 21 | Daughter | Typist | Ohio |
| 48 | Earl E Witherspoon | 25 | Son | Artist | Ohio |
| 49 | Frank A Gray | 28 | Lodger | Pressman | Ohio |
| 50 | Gary Lee Gray | 3 | Grand-son | — | Ohio |
| 51 | Clyde Everhart | 32 | Head | Painter | Ohio |
| 52 | Elizabeth Everhart | 25 | Wife | — | Ohio |
| 53 | William G Anthon | 74 | Head | Carpenter | Ohio |
| 54 | John D Thorpe | 52 | Head | Laborer | Kentucky |
| 55 | Grace Thorpe | 46 | Wife | Maid | Kentucky |
| 56 | Abraham Stout | 70 | Head | Painter | Ohio |
| 57 | John H Mack | 47 | Head | Mechanic | West Virginia |
| 58 | Etta Mack | 43 | Wife | — | Kentucky |
| 59 | Dorothy Mack | 20 | Daughter | Typist | Ohio |
| 60 | Eugene Mack | 19 | Son | Salesman | Ohio |
| 61 | Elsie Mack | 16 | Daughter | — | Ohio |
| 62 | John H Mack THIS PERSON | 15 | Son | — | Ohio |
| 63 | Thomas Mack | 13 | Son | — | Ohio |
| 64 | Mary R Mack | 9 | Daughter | — | Ohio |
| 65 | Virginia L Mack | 8 | Daughter | — | Ohio |
| 66 | Earl Mack | 4 | Son | — | Ohio |
| 67 | Robert M Fuller | 39 | Head | Steel Roller | Ohio |
| 68 | Irene Fuller | 37 | Wife | — | Kentucky |
| 69 | Mary L Fuller | 16 | Daughter | — | Ohio |
| 70 | Robert Fuller | 15 | Son | — | Ohio |
| 71 | Francis Fuller | 13 | Son | — | Ohio |
| 72 | Charles Fuller | 11 | Son | — | Ohio |
| 73 | Isabel Fuller | 7 | Daughter | — | Ohio |
| 74 | Dianna Fuller | 1 | Daughter | — | Ohio |
| 75 | Norbert Hale | 36 | Brother-in-law | Laborer | Kentucky |
| 76 | End Of Block | None | — | — | — |
| 77 | Everett W Meeks | 26 | Head | Ganger | Ohio |
| 78 | Lydia Meeks | 26 | Wife | — | Hamilton |
| 79 | Patricia Meeks | 2 | Daughter | — | Ohio |
| 80 | Edward H Stremmel | 67 | Head | Machine Shop | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)