My ancestors, Capt. David CARGILL, Jr. and wife Mary (Abernethy) CARGILL are buried at King's Chapel, Boston. Is there any way that I can find information about what's on her marker? Herman MELVILLE was gg-grandson of this couple and researched the family but I don't know where his material is located. Basically, I want to know her year of birth and possible birthplace. thanks, Charles