I grew up by a cementary even older than that. I use to sneak in to read the tombstones when I was little.
There are graves there from the 1700s. Rumor had it that one of the tombs there was had a passage to the underground tunnels.
I was never brave enough to try to look for that in a grave yard, but some of the stones really had spooky stories on them.
There's an old Dutch cemetary near my house that dates from the 1740s. I totally know what you mean about reading the old headstones.
anyone ever been to Annie's Road?