The facts:
Adoniram "Nide" Warner Smith
Birth date: Feb 18, 1880, Haley Station, Ontario (not registered, just word of mouth date)
Background (what I heard): Grampa lived with Aunt Edna and Uncle Cliff. It was determined that Grampa should be receiving the Old Age Pension. When they applied, the government had no record of Grampa's birth, so there wasn't a way to prove he should be getting Old Age Pension. At some point, the government allowed a "best guess" year to be submitted, which was 1880.