Have you already checked the NY Census Index? These are some Washburns in Wyoming County from the 1850 index. Washburn, Calvin NY WYOMING CO. ATTICA 148 1850 Washburn, Maria NY WYOMING CO. ATTICA 132 1850 Washburn, Reuben NY WYOMING CO. ATTICA 127 1850 Washburn, Ruben NY WYOMING CO. ATTICA 149 1850 Washburn, Vicar NY WYOMING CO. ATTICA 127 1850 Washburn, Jean