c. 760 – c. 772) was a King of Sussex, apparently reigning jointly with Oswald, Ælfwald, and Oslac.
According to the Anglo-Saxon Chronicle, version D, Osmund was reigning in Sussex when Archbishop Cuthbert died in 760, so his rule commenced before that event.
Osmund also issued a charter dated 770 in which he is listed as Osmundus rex.
[3] Evidently he was demoted from king to ealdorman following Offa's conquest of Sussex.
You can help Wikipedia by expanding it.This article related to British royalty is a stub.