William, Lord Botreaux

I've been researching this old codger in an attempt to find a
definitive description of his arms.
There are many Botreaux arms descibed including chequed coats, a
Griffon and even a trio of toads, but I need to know the arms of the
Lord living in 1461 (he would have been too old to bear arms in the
Wars of the Roses).
I believe he died in 1462 and the Barony of Boscastle in Cornwall
passed into the grasping hands of the Hungerfords, although it may well
have come under forfeiture at this time.