Fýfteógða
Bosworth & Toller Anglo-Saxon Old English Dictionary - fýfteógða
According to the Old English Dictionary:
the fifteenth :-- Forþferde he ðý fýfteógeðan dæge Kalendarum Martiarum
- fýfteógða
- qui defunctus die dĕcĭma quinta Kalendārum Martiārum, Bd. 4, 5; S. 571, 36.