The rule is to look for records in the county where they lived at a specific time. If your ancestor was living in what is now Greene County in 1775, the records would be in Washington County, NC. They remain with that jurisdiction. Following 1777 when Washington County became Tennessee, the records would then be held by that jurisdiction. If your ancestor was living in a part of Washington County that later became Greene County, the records would be in Washington County until 1783, then Greene County assembled their own records. For example, my ancestors were in the area about 1780-83, I look in Washington County until 1783, then in Greene County. Hope this helps. Back in those days, your ancestor could have lived in three counties and never have moved! If you have access to the Atlas of County Boundary Changes being published by Newberry Library, use it. Tennessee is just about to be published. June Buller >