Ken and list, Do the rent rolls serve the same genealogical purpose as a tax list? I have been trying to pin down just when my ancestors left Frederick Co, and the tax records do not exist for that period. The last record of their presence in Frederick Co (a deed that states they were of Frederick Co) is 1774, and the first record of their presence in Washington Co, PA is a tax list of 1781. I need to narrow that down, perhaps rent rolls would do it? All help appreciated! Thanks Ellen Copper