KOSTER; DEU>LewisCo,NY,USA; 1840-1860 I am researaching the Koster family. My great grandfather was born in 1842 and came to US in 1846. His first name was DIllen, but that may have been changed from another first name. Anyone with information about the Koster family in Lewis County, New York please e-mail me at DRYAN50@aol.com Diane Ryan