I just found this forum. I am descended from Elizabeth Cranch who married William Stone on 2 May 1649 at Yealmpton, Devon. I believe she was baptised 7 November 1624, the daughter of Robert Crantch, who was in turn baptised 15 February 1583 at Malborough, the son of Richard Crantch.
Do you know of any connection with your ancestors? Both these towns are within a few hours walk of Kingsbridge.