There were a number of stained glass panels at the Stained Glass Museum in Ely Cathedral which were of, or included, the Royal Arms.
In this panel, we see the arms of King Henry VI (1421-1471) impaling those of Queen Margaret of Anjou (1430-1482).
The supporters in base are an heraldic antelope for Henry and a golden falcon for Margaret.
This glass window panel was made in 1843 by William Miller, and came to the Cathedral from Crockerton Church, Wiltshire.
I think it is a beautiful piece of the craftsman's art, and a lovely display of royal heraldry. Wouldn't you agree?