blisland manor house, cornwall

around the back of this elizabethan manor is a wing that co tains early norman detail, with two small windows and a round headed doorway with zigzag inscribed on its single stone. the building is almost seperate from the house, and this is the north side - it is aligned east-west- but I am unsure whether this was the chapel of the house: the carved stone was probably reused from the church, naybe as late as 1700