May have been a member of the Hungarian royal family. Missionary bishop on the isle of May in the Firth of Forth off the western coast of Britain. Martyred with fellow missionaries by Danish invaders. May have evangelized in Ireland. May have been bishop of Saint Andrews; records are unclear. Leader of a group of martyrs killed by pagan Dane.
- at Pannonia, Hungary
- “Saint Adrian of May“. CatholicSaints.Info. 3 March 2009. Web. 4 October 2015. <>