Thanks so much for all your help! I always thought it was very touching that Oscar (and his second wife) named his daughter after his first wife. I remember meeting his daughter Myrtle once when I was young and she was a very kind woman. I wanted to be able to have accurate information for her namesake Myrtle in my genealogy.
Oddly enough, this query was about my mom's side of the family, but I have Cassel ancestors on my dad's side!