I have a map showing a list of 37 cemeteries in Gratiot County. There is none listed as Douglass Cemetery. However, Ashley is located in the Southeast corner of Gratiot County in Elba Twp. bording to the west, Washington Twp. Just to the north is North Star Twp. and Hamilton Twp. The closest cemetery to Ashley listed is Hufford Cemetery. If you could contact someone affiliated with Hufford, they may be able to shed some light on the whereabouts of Douglass Cemetery.