Hi Liz, I don't know about the Casners, but Addie A. Casner was Addie Alzina (Messinger) Casner, daughter of Sumner M. and Sarah M. (Smith) Messinger, and Frank was her husband. Addie was born 12-7-1874 in Fairfield, UT. Sorry I can't help you with the Casner side. I am related to the Messingers. If I find anything that could help you, though, I'll let you know. Nina T.