Info Info Roy Koop Roy Koop, Thursday, December 09, 2021. Kranz Funeral Home - Cass City, MI and Kingston, MI Roy Koop Thursday, December 09, 2021ROY ALLEN KOOP 89, of Cass City, died Thursday, December 9, 2021 in his home. He was born August 15, 1932 in Waterf… Read More at Kranz Funeral Home — Cass City and Kingston Tweet Tweet