While visiting the Wildwood Cemetery in Sheboygan, WI, we came across this marker, which also had a 2-sided sign posted near it.

Wildwood Cemetery-Sheboygan-Waldo-David-rev war
Wildwood Cemetery-Sheboygan-Waldo-David-sign 1
Wildwood Cemetery-Sheboygan-Waldo-David-sign 2

Looking for more information, I found the Wisconsin Society Sons of the American Revolution, which included a whole section on Revolutionary War graves.  It was great to have this sign next to the marker (and have so much information on this man).