JM
James Mckay — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mason-County, Michigan
Our Model Tree links this James Mckay across the 1930 and 1940 US Censuses in Mason-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 6-person household.
Age 39
b. ~1901
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mason-County, Michigan |
| Surname | McKay |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Ludington city |
| 1935 Residence (County) | Mason |
| Additional Details | |
| Occupation | Trucker |
| Industry | Own business |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Trucker |
| Township / Ward | Ludington City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Mckay | Head | — | 39 | ~1901 |
| Beatrice Mckay | Spouse | — | 31 | ~1909 |
| James Mckay | Son | — | 1 | ~1939 |
| Margaret Mckay | Daughter | — | 12 | ~1928 |
| Lillian Mckay | Daughter | — | 8 | ~1932 |
| Viola Mckay | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Mason, Michigan
Head, age 29
Mason, Michigan · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKay |
| Given Name | James H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 26 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Drill Presser |
| Industry | Motor Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Mason-County, Michigan
Head, age 39
Mason-County, Michigan · implied b. ~1901 — 6 household members
| Surname | McKay |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Ludington city |
| 1935 Residence (County) | Mason |
| Occupation | Trucker |
| Industry | Own business |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| 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 James Mckay across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James 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 — Mason-County, Michigan
Open full size
1940 US Federal Census — Mason-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01788-00182)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence Case | 58 | Wife | Assistant | New York |
| 2 | Lawrence Case | 25 | Son | Sexton | Michigan |
| 3 | Lawrence Perry | 19 | grandson | — | Michigan |
| 4 | Arlene Perry | 13 | granddaughter | — | Michigan |
| 5 | Theodore Case | 55 | Head | Car Repairer | Michigan |
| 6 | Mary Case | 55 | Wife | — | Michigan |
| 7 | Kenneth Case | 18 | Son | Repair Assistant | Michigan |
| 8 | Harold Case | 15 | Son | — | Michigan |
| 9 | Henning A. Lundquist | 48 | Head | Proprietor | Sweden |
| 10 | Freda Lundquist | 42 | Wife | — | Sweden |
| 11 | Violet Lundquist | 19 | Daughter | Clerk | Illinois |
| 12 | Ray Johnson | 18 | Boarder | Releaseer | Illinois |
| 13 | D. Phil Wallace | 39 | Head | — | Kansas |
| 14 | Roy Tropanier | 34 | Head | Dyescamer | Michigan |
| 15 | Angeline Tropanier | 34 | Wife | Stenographer | Michigan |
| 16 | James Tropanier | 11 | Son | — | Michigan |
| 17 | James Mckay THIS PERSON | 39 | Head | Trucker | Michigan |
| 18 | Beatrice Mckay | 31 | Wife | — | Michigan |
| 19 | Margaret Mckay | 12 | Daughter | — | Michigan |
| 20 | Viola Mckay | 11 | Daughter | — | Michigan |
| 21 | Lillian Mckay | 8 | Daughter | — | Michigan |
| 22 | James Mckay | 1 | Son | — | Michigan |
| 23 | Howard Cowell | 61 | Head | Janitor Clerk | Michigan |
| 24 | Mayme Cowell | 47 | Wife | — | Michigan |
| 25 | Edgar Cowell | 23 | Son | Truck Driver | Michigan |
| 26 | Clarence Kromlin | 30 | Head | Trucker | Michigan |
| 27 | Leona Kromlin | 34 | Wife | — | Michigan |
| 28 | Barbara Kromlin | 6 | Daughter | — | Michigan |
| 29 | Bruce Kromlin | 4 | Son | — | Michigan |
| 30 | C. S. Austin | 72 | Head | Disabled Veteran | New York |
| 31 | Oscar Johnson | 38 | Head | Dye Maker | Michigan |
| 32 | Elsie Johnson | 37 | Wife | — | Michigan |
| 33 | Walter Knudson | 49 | Head | Finishing | Michigan |
| 34 | Ella Knudson | 43 | Wife | — | Michigan |
| 35 | Bertman Borner | 29 | Head | Cabinet Maker | Michigan |
| 36 | Frances Borner | 24 | Wife | — | Michigan |
| 37 | Roger Borner | 3 | Son | — | Michigan |
| 38 | Henning Lundquist | 47 | Head | Jeweling | Michigan |
| 39 | Dorothy Lundquist | 46 | Wife | — | Illinois |
| 40 | Dorothy Lundquist | 22 | Daughter | Office | Michigan |
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)