Thank you Slowhands. I already have this information; indeed the Tythe map of 1838 shows an unoccupied old house and gardens to the east of Abenhall church but I have no proof that this was Abenhall Manor House. My task is to try to find the exact location of the house, which is why I was intrigued by the assertion made by Jefff that it was at Court Farm at Mitcheldean.