What Northumbrian missionary saint studied at Rath Melsigi?
Rath Melsigi: Rath Melsigi the monastery in Ireland during the 7th century where Saint Egelbert, an Anglo Saxon was educated. Rath Melsigi:  Among those known to have studied there were Willibrord, Swithbert, and Egbert (639-729), who organised the mission to Frisia.
i don't know