Columbia subject headings:
Bitton, Thomas de, -1307.
Richard, de Gravesend, Bishop of London, -1303.
Harvard subject headings:
Button, Thomas de, Bishop of Exeter, -1307.
Button, Thomas de, bp. of Exeter, 1307.
Gravesend, Richard de, Bishop of London, -1303.
Gravesend, Richard de, bp. of London, -1303.
Princeton subject headings:
Button, Thomas de, bp. of Exeter, d. 1307.
Gravesend, Richard de, bp. of London, d. 1303.