There is a book that I think would be helpful to you. It's called "The Dufur Family from 1776-1977" aka: "200 years of Dufurs"The description says it's about the decendents of David & Sarah Dufur who emigrated from New York to Ohio. I have been looking for it also. They have it on micofilm thru LDS church. If you have a Family History Center by you they can get it for you. There is a little charge to get the microfilm about $4 I think. Checkout www.familysearch.org and go to the family history library section. Good Luck.