You said.....My mother told me when my great-grandfather died, my grandfather Lyle Roy, had to drop out of school at the age of 9 (Grade 4 or 5) and go work to provide for the family in absence of my great-grandfather
Lyle born 1927 plus 9 equals 1936 which is about when the family says he died
as to the child born 1938....my great greatgrandma had a child 2 years after my gr gr grandfather died !!
?immaculate conception......no......an affair with a local farmer! she died 2 weeks after giving birth to a son and the 6 children grew up separated with elderly relatives