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John Mckay — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cass-County, North Dakota
Our Model Tree links this John Mckay across the 1920, 1930 and 1940 US Censuses in Cass-County, North Dakota (XGBoost, ~Confirmed), with identified parents John & Marie — first a head (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, North Dakota |
| Surname | McKay |
| Given Name | John S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Fargo city |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Railway Clerk |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1379 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Railway Clerk |
| Township / Ward | Fargo City |
| Est. Birth Year | ~1904 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Vivian Mckay | Spouse | — | 31 | ~1909 |
| Robert Mckay | Son | — | 7 | ~1933 |
| Daniel Mckay | Son | — | 2 | ~1938 |
| John Mckay | Head | — | 36 | ~1904 |
Census Appearances
1920
Cass, North …
Son, age 16
Cass, North Dakota · implied b. ~1904 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKay |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Cass, North …
Head, age 26
Cass, North Dakota · implied b. ~1904 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKay |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 26 |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | Check Clerk |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Cass-County, North …
Head, age 36
Cass-County, North Dakota · implied b. ~1904 — 4 household members
| Surname | McKay |
| Given Name | John S |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Fargo city |
| 1935 Residence (County) | Cass |
| Occupation | Railway Clerk |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1379 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mckay (~0.92 confidence) and mother Marie Mckay (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mckay
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Marie Mckay
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mckay
Head · 1940 · age 36 · b. ~1904 · North Dakota
★ 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 — Cass-County, North Dakota
Open full size
1940 US Federal Census — Cass-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02997-00139)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Enos T Jenstad | 45 | Head | Custodian | Minnesota |
| 2 | Marguerite M Jenstad | 29 | Wife | — | North Dakota |
| 3 | Dorothy Jenstad | 19 | Daughter | Housework | North Dakota |
| 4 | Robert Jenstad | 17 | Son | Salesman | North Dakota |
| 5 | Robert Ostman | 43 | Head | Truck Driver | Minnesota |
| 6 | Alma O Ostman | 40 | Wife | — | Minnesota |
| 7 | Grace Ostman | 19 | Daughter | — | Minnesota |
| 8 | Kenneth Ostman | 16 | Son | — | Minnesota |
| 9 | Betty Ostman | 13 | Daughter | — | North Dakota |
| 10 | John S Mckay THIS PERSON | 36 | Head | Railway Clerk | Minnesota |
| 11 | Vivian B Mckay | 31 | Wife | — | North Dakota |
| 12 | Robert John Mckay | 7 | Son | — | North Dakota |
| 13 | Daniel Lewis Mckay | 2 | Son | — | North Dakota |
| 14 | Michael S Hyland | 65 | Head | R.E.A. Engineer | Illinois |
| 15 | Mary E Hyland | 63 | Wife | — | Illinois |
| 16 | Richard F Hyland | 33 | Son | R.E.A. Line Man | Illinois |
| 17 | Joe Kathleen Hyland | 18 | Son | — | North Dakota |
| 18 | Albert Forness | 48 | Head | Caretaker | Norway |
| 19 | Bertha O Forness | 38 | Wife | — | Minnesota |
| 20 | Loyd Forness | 13 | Son | — | North Dakota |
| 21 | Charlotte Forness | 12 | Daughter | — | North Dakota |
| 22 | Palmer Forness | 10 | Son | — | North Dakota |
| 23 | Esther Forness | 5 | Daughter | — | North Dakota |
| 24 | Carrie Anderson | 77 | Mother in law | — | Norway |
| 25 | Andrew Hansen | 59 | Lodger | Janitor | Norway |
| 26 | Alfred Greene | 48 | Lodger | Engineering | Minnesota |
| 27 | Adolph J Johnson | 55 | Head | Salesman Clerk | Minnesota |
| 28 | Agnes Johnson | 42 | Wife | — | North Dakota |
| 29 | Ardith Johnson | 17 | Daughter | — | North Dakota |
| 30 | Eunice Johnson | 15 | Daughter | — | North Dakota |
| 31 | William H Halstead | 46 | Head | Army Officer | New Jersey |
| 32 | Harold F Nelson | 36 | Head | Laborer | North Dakota |
| 33 | Lillian Nelson | 36 | Wife | Beauty Operator | North Dakota |
| 34 | Helen Nelson | 66 | Mother | — | Denmark |
| 35 | Henry Gehren | 43 | Head | Special Agent | North Dakota |
| 36 | Caroline Gehren | 35 | Wife | — | Minnesota |
| 37 | Robert Gehren | 14 | Son | — | North Dakota |
| 38 | Delores Gehren | 12 | Daughter | — | Minnesota |
| 39 | Donald Gehren | 10 | Son | — | Minnesota |
| 40 | Bertha Bidaux | 54 | Head | Laundress | Canada |
Pedigree Summary
John
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)