Re: John Douglas Yolton burial information.
If you look at the same cemetery listing under SHERWOOD, you will see more YOLTONs.I believe Gary, Margaret, and Charles SHERWOOD are actually Cary YOLTON, wife Margaret, and son Charles Sherwood YOLTON.
Cary and Margaret are in Hempfield Twp., Westmoreland Co., PA in the 1850, and in Zuma Twp., Rock Island Co., IL in the 1860 census. They have a son John D. YOLTON, and great-grandson John Douglas YOLTON.
I haven't checked on John D. YOLTON, born 1801, but he may be Cary's father.
I have some info on the YOLTONs in Rock Island Co., IL if anyone is interested.