Hi Jeremy
I would love to traipse around the coastal mountains with you looking for graves, but I love in the Sierra foothills and it's a bit too far for the moment.
I found the two sites on an historical topo while I was working on the USGS National Map Corps making sure they have accurate digital records of Sonoma County cemeteries (you might consider being apeer reviewer for those!). The two sites are at 38.65817 123.30462 and 38.65298 and 123.28164.
You can see the historical topos if you google national map usgs and then on the left menu select historical topos, and search for the Annapolis quad in California.
Cheers
Kim