This is a Message Board Post that is gatewayed to this mailing list. Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/rw/VRB.2ACE/1814.1 Message Board Post: Yes, Hillsdale is in Columbia County. It was originally part of Claverack. Arthur C. M. Kelly has transcribed many of the baptismal records of that area. You might be able to find them in a library. His catalog is at http://www.kinshipny.com/catalog.htm#COLUMBIA In that era you should look for spellings like Esselsteyn, Ysselsteyn or some variant.