HeadingOffa, roi de Mercie used in: Bibliothèque nationale de France, Paris
Sources
Found inMourre, 1986. — LC authorities - http://authorities.loc.gov (2005-10-13). — Æthelbald and Offa : two eighth-century kings of Mercia : papers from a conference held in Manchester in 2000, Manchester Center for Anglo-Saxon studies / ed. by David Hill, Margaret Worthington, 2005