1. Cat., Irish Gold Ornaments, Royal Irish Academy, 1920, pl. XVIII, and pp. 87 and 88.
2. Cat. Mus. of Ant., Edinburgh (1892), p. 210
3. Cat. Mus. of Ant., Edinburgh (1892), p. 210
4. Cat. Mus. of Ant., Edinburgh (1892), p. 157
5. Tate , History of Alnwick, 15