Jan, I found John M. Bush and Jane Osterhoudt baptizing William, John, Richard and Elizabeth at the Flatbush Reformed Church from the 1810's through the 1830's - the name "Bush" appears to be the spelling used in every account (if that is your John M.). Sorry, I don't have the burial ground index for that area - At a quick glance I didn't see them in "Old Gravestones of Ulster County". Regards, Bruce Wilcox bnlwilcox@inficad.com