Dictionary of Medieval Names
from European Sources

Osgyth f. Old English ōs 'god' + Old English gȳð 'war'.

The name of a 7th C Northumbrian saint.

England
Latin
1381 Ositha (abl) Suffolk1381 p. 93
Cite as: S.L. Uckelman. "Osgyth". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Osgyth.