This post is rather old, but in his obituary, your grandfather is listed as being from Apa as well.
My great-grandmother was Theresa Magda, and my great-grandfather was Peter Kasyan. Since Peter died in the early 1900s, Michael Dirle was often referred to as "Big Pop" and Theresa was "Big Mom." I'd be interested in contacting you and sharing some information. I have some obituaries and photos of a few graves, which you may or may not have. I'm also pretty sure I have some photos of Theresa and Michael, which I've been meaning to label with my mother Cheryl.