Sources and Further Reading
MICHALAK, Arkadiusz. 2011. “‘From Every Side Armed with a Cross Sign’. A Crusader’s (?) Sword from the Collection of the Hungarian National Museum in Budapest.” Studia Universitatis Cibiniensis. Series Historica, January, 53–71. https://search.ebscohost.com/login.aspx?direct=true&db=30h&AN=86694522&site=eds-live&scope=site
Sylvie Bazin-Tacchella. 2016. “Actes de Pierre de Dreux, Duc de Bretagne (1214-1237).” Perspectives Médiévales 37 (January). https://search.ebscohost.com/login.aspx?direct=true&db=edsdoj&AN=edsdoj.b2964cabeb62422b8ba0f7d74a4148c7&site=eds-live&scope=site.
A Treatise on Heraldry, British and Foreign: With English and French Glossaries, Volume 1 John Woodward, George Burnett
Arthur's Ermine Arms LACY, NORRIS J. “Arthur’s Ermine Arms.” Arthuriana 21, no. 4 (2011): 42–52
Records of Pierre de Dreux, Duke of Brittany (1214-1237)