Been there. Done that.
If only there were some way for anyone to plot cemeteries on a map that EVERYBODY uses...
Oh wait. There totally is!
All the place markers in Google Maps don't just show up one day. Someone puts them in, using a tool called Google Map Maker. And fortunately, cemeteries are really easy to add!
Check out this video to learn how you can add places to Google Maps. When you get to the place category list, there is a category specifically for Cemeteries. Click on that, fill in the pertinent information, and you're done! Once your changes are approved, they'll be visible on Google Maps for all to see.
If your family cemeteries are WAY out in the sticks like mine are, and the road or path to access the cemetery isn't on Google Maps either, you can add that as well. Here's a video explaining how to do it. If you need help, check out the Map Maker forums and the fun folks over there will help you out.
And as always, don't forget to check out the FindaGrave app and BillionGraves to plot the GPS coordinates of individual graves for your family members. Answer photo requests and add GPS coordinates for the cemeteries in your area to help others out as well. If you want your relatives to be find-able to the generation that Googles, be sure Google knows where your relatives are buried!