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Offa wæs cyning in ealdsagan se wæs wealdend ofer Angelfolc in Germanie, and se weard Miernca cyninga ealdfæder.

Miercna cyninga mægracu giddaþ þe Offa wæs hiera ealdfæder and Offa Miercna Cyning bar his naman. Offa wæs Wermunding and Offan sunu wæs Angelþeow. In 'Widsið' þæm leoþe hieraþ we:

Offa weold Ongle,Alewih Denum;
Se wæs þara mannaModgast ealra,
No hwæþre he ofer OffanEorlscype fremede,
Ac Offa geslogÆrest monna,
Cnihtwesende,Cynerica mæst.''

Offan anwig fremmede he on ieg onmiddan Fifeldor þære ea and þær slog he begen æþelingas þa feohteden wið hine.

In Dena folcstær be Saxo Grammaticus areceþ eall Offan lif and cynedom.  In Beowulf þæm leoðe we hieraþ þe Offa Cyning beweddode Modþryð, seo hæfde gemyrdrod eall hiere wogeras beforan him.

Cyningas
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