The details are hazy and I'm not sure what set me off on the cursed path of being a Leaf fan. I was 5 when they last won the Cup so that _could_ have been it. I do remember watching Keon, Ullman, Ellis, Henderson...but have much stronger memories of the Sittler era.
Family dynamics were interesting. My brother became a Bruin fan at an early age (I hate to admit that). My dad, mom and sister were Ranger fans until the Islanders came into being, at which point mom and sis switched allegiance leaving my dad alone to suffer all the "1940!!" razzing. Fortunately he did get to see one more Cup though I think he always felt it was a bit "tainted" by all the Oiler mercenaries they brought in.