Correction on my previous message. I see what you're saying now, Amy "Jeanine" Sloan is the mother of the three not sibling. I have that Wm. Yonack is the son of Fred & Anna Tonack, but no futher info. I found him w/parents:
Census 1920: Sarpy Co. NE. Papillon Prec. Pg. 7a, Fam. 180 [Willie Tonack, age 16, Ne/Posen/Hessen w/parents]