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John Mcmillan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Shelby-County, Illinois
Our Model Tree links this John Mcmillan across the 1920, 1930 and 1940 US Censuses in Shelby-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1866), then head of a 2-person household.
Age 74
b. ~1866
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Shelby-County, Illinois |
| Surname | McMillan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Shelby |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cowden Village |
| Est. Birth Year | ~1866 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Janet Mcmillan | Daughter | — | 34 | ~1906 |
| John Mcmillan | Head | — | 74 | ~1866 |
Census Appearances
1920
Shelby, Illinois
Head, age 54
Shelby, Illinois · implied b. ~1866 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMillan |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Year of Naturalization | R |
| Birthplace (normalized) | ohio |
1930
Shelby, Illinois
Head, age 64
Shelby, Illinois · implied b. ~1866 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMillen |
| Given Name | John H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Widowed |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Shelby-County, Illinois
Head, age 74
Shelby-County, Illinois · implied b. ~1866 — 2 household members
| Surname | McMillan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Shelby |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 4 |
| 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 Mcmillan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcmillan
Head · 1940 · age 74 · b. ~1866 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Shelby-County, Illinois
Open full size
1940 US Federal Census — Shelby-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00890-00100)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Freda Louise Taylor | 23 | Wife | Housewife | Illinois |
| 42 | Robert Arthur Taylor | 1 | Son | — | Illinois |
| 43 | Lola Mcmillen | 68 | Head | Housework | Illinois |
| 44 | Clarice Mcmillen | 37 | Daughter | Supervisor | Illinois |
| 45 | C. H. Moore | 43 | Head | Janitor | Illinois |
| 46 | Marnet Moore | 32 | Wife | Housewife | Illinois |
| 47 | Clarice Moore | 18 | Daughter | Housework | Illinois |
| 48 | Billy Moore | 17 | Son | — | Illinois |
| 49 | Lionel Moore | 15 | Son | — | Illinois |
| 50 | Rita Moore | 13 | Daughter | — | Illinois |
| 51 | Loueta Moore | 10 | Daughter | — | Illinois |
| 52 | Francis Moore | 9 | Son | — | Illinois |
| 53 | Gerald Moore | 6 | Son | — | Illinois |
| 54 | Dean Moore | 5 | Son | — | Illinois |
| 55 | Alice L. Moore | 1 | Daughter | — | Illinois |
| 56 | C. G. Perkins | 56 | Head | Owner | Illinois |
| 57 | Grace Perkins | 54 | Wife | Housework | Illinois |
| 58 | Jane Perkins | 15 | Daughter | — | Illinois |
| 59 | Glen Brumby | 29 | Head | Laborer | Illinois |
| 60 | Etta Brumby | 26 | Wife | Housewife | Illinois |
| 61 | Betty Brumby | 7 | Daughter | — | Illinois |
| 62 | Velmar Brumby | 4 | Son | — | Illinois |
| 63 | M. B. Bechtel | 72 | Head | Retired Farmer | Illinois |
| 64 | Mary Bechtel | 70 | Wife | Housewife | Illinois |
| 65 | John Mcmillan THIS PERSON | 74 | Head | — | Ohio |
| 66 | Janet Mcmillan | 34 | Daughter | — | Illinois |
| 67 | Paul Mcclory | 26 | Head | Trucker | Illinois |
| 68 | Jessie Mcclory | 30 | Wife | Housewife | Illinois |
| 69 | Marvin Mcclory | 10 | Son | — | Illinois |
| 70 | Donald Mcclory | 7 | Son | — | Illinois |
| 71 | Milton Mccamfield | 46 | Head | Common Laborer | Illinois |
| 72 | Roberta Mccamfield | 19 | Son | Laborer | Illinois |
| 73 | Carl Mccamfield | 22 | Son | Laborer | Illinois |
| 74 | Thur Mccamfield | 16 | Son | — | Illinois |
| 75 | Hannah Newkirk | 82 | Head | — | Ohio |
| 76 | Maude Severe | 52 | Head | Housework | Illinois |
| 77 | Velma Gibson | 15 | Niece | Housework | Illinois |
| 78 | J. W. Conrad | 71 | Head | — | Illinois |
| 79 | David Lawrence | 61 | Head | Common Laborer | Illinois |
| 80 | Lucy Lawrence | 57 | Wife | Housewife | Illinois |
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)