Dictionary of Medieval Names
from European Sources

Cadwallader m. Old Breton, Old Welsh cat 'battle' + Old Breton uualatr, Middle Welsh gwaladyr 'powerful, prince'.

The name of a 7th C king of Gwynedd.

Wales
Latin
1198 Cadwalader (nom) Pryce-1st no. 5, Katwaladyr (nom) ibid. no. 8; 1208 Cadwalader (abl) ibid. no. 6
Cite as: S.L. Uckelman. "Cadwallader". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2017, no. 1. http://dmnes.org/2017/1/name/Cadwallader.