sentences:  Fursey founded a monastery at Killursa in County Galway.He then travelled to East Anglia with his brothers, Foillan and Ultan, during the early 630s shortly before St Aidan founded his monastery on Holy Island.Around 633, King Sigeberht received them and endowed a monastery, which they established at Cnobheresburg on the site of an old, stone-built, Roman shore-fort near the sea.