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John Mckay — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this John Mckay across the 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 7-person household.
Age 39
b. ~1901
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | McKay |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Oakland |
| Additional Details | |
| Occupation | Farmer |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | C 6 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farmer |
| Township / Ward | Farmington Twp |
| Est. Birth Year | ~1901 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Elmira Mckay | Spouse | — | 40 | ~1900 |
| John Mckay | Head | — | 39 | ~1901 |
| Alice Mckay | Daughter | — | 10 | ~1930 |
| David Mckay | Son | — | 5 | ~1935 |
| Hugh Mckay | Son | — | 9 | ~1931 |
| Gordon Mckay | Son | — | 16 | ~1924 |
| Frances Mckay | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Oakland, Michigan
Head, age 29
Oakland, Michigan · implied b. ~1901 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacKay |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | OA |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Michigan |
| Occupation | Yes |
| Industry | Attorney |
| Class of Worker | Law |
| Can Read/Write | Yes |
| Home Owned/Rented | 14,000 |
| Home Value / Rent | R |
| Veteran | O |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Oakland-County, Michigan
Head, age 39
Oakland-County, Michigan · implied b. ~1901 — 7 household members
| Surname | McKay |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Oakland |
| Occupation | Farmer |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | C 6 |
| 1935 Residence | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Mckay across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mckay
Head · 1940 · age 39 · b. ~1901 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01799-00004)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rueben Owens | 62 | Head | Boiler Maker | Michigan |
| 2 | Caroline Owens | 60 | Wife | Cashier | Michigan |
| 3 | W. John Owens | 15 | Son | — | Michigan |
| 4 | Elmer Graham | 40 | Head | — | Michigan |
| 5 | Carrie Graham | 54 | Wife | — | Michigan |
| 6 | Andrew Carrier | 23 | Lodger | Farm Laborer | Canada Eng |
| 7 | Dayton Graham | 28 | Head | Laborer | Michigan |
| 8 | Phyllis Graham | 27 | Wife | — | Michigan |
| 9 | Mary Walker | 78 | Head | — | New York |
| 10 | Sarah Murray | 53 | Daughter | — | Michigan |
| 11 | Forest Gomery | 51 | Head | Drug Salesman | Michigan |
| 12 | Corinne Gomery | 43 | Wife | — | Canada Eng |
| 13 | Claire Gomery | 3 | Daughter | 0 | Michigan |
| 14 | Thomas Gomery | 2 | Son | 0 | Michigan |
| 15 | Jessie Mcgowan | 71 | Mother | — | Canada Eng |
| 16 | John P. Mckay THIS PERSON | 39 | Head | Farmer | Michigan |
| 17 | Elmira Mckay | 40 | Wife | — | Canada Eng |
| 18 | Gordon Mckay | 16 | Son | News Boy | Michigan |
| 19 | Frances Mckay | 10 | Daughter | — | Michigan |
| 20 | Alice Mckay | 10 | Daughter | — | Michigan |
| 21 | Hugh Mckay | 9 | Son | — | Michigan |
| 22 | David Mckay | 5 | Son | — | Michigan |
| 23 | Ernest E. Mcgarvey | 60 | Head | Green Keeper | Michigan |
| 24 | Anna Mcgarvey | 40 | Wife | House Work | Michigan |
| 25 | Anna Mcgarvey | 15 | Daughter | House Work | Ohio |
| 26 | Hannah Mcgarvey | 13 | Daughter | — | Ohio |
| 27 | Ernest Jr. Mcgarvey | 11 | Son | — | Michigan |
| 28 | Mark Mcgarvey | 5 | Son | — | Michigan |
| 29 | Raymond H. Witt | 29 | Head | Painter | Illinois |
| 30 | Winifred Witt | 27 | Wife | — | Pennsylvania |
| 31 | Frederick W. Witt | 3 | Son | — | Michigan |
| 32 | Maryland Witt | 2 | Daughter | 0 | Michigan |
| 33 | Irving French | 78 | Head | — | New York |
| 34 | Velma French | 73 | Wife | — | New York |
| 35 | Walter French | 52 | Son | Farm Laborer | New York |
| 36 | Edward L. French | 30 | Son | Farm Laborer | New York |
| 37 | Marion French | 22 | Daughter in law | — | Michigan |
| 38 | Marlene French | 4 | Grand daughter | 0 | Michigan |
| 39 | Isaac French | 12 | Grand son | — | Michigan |
| 40 | Katherine Sharp | 48 | Head | — | Canada Eng |
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)