I see it's been quite some time since you posted this, but I'm hoping you will still see it. I am a descendant of Killian and Elizabeth as well, through Susan. I am also trying to find information on them, as that is where their branch currently ends on my tree.
I am curious if you've found any information on them since posting this?

By the way, I have a Donadlson family photo from around 1925 that includes Maggie, Louis and Bob Papke :).