Dear JLHaccou,
My gr-grandmother was Johanna Kerkvliet, sister to your gr-grandmother, Dina. I have visited Gerrit and Cornelia's gravesite in Iowa and have a photo of it if you would like it. I was wondering if you have any old family photos of Dina, or any of the other Kerkvliets. If so, I would love to have a copy. Here is my email address and we could exchange any information that we have.
albion89@yahoo.comThanks.