The redoubtable Marcella, once of Under the Oak, now of Omnium Sanctorum Hiberniae and Trias Thaumaturga, reminds us that 3 May is the feast day of Brigit's first bishop, Saint Conleth of Kildare. She has drawn together various notes about him on Omnium Sanctorum Hiberniae:
On May 3 we celebrate the feast of Saint Conleth, first Bishop of Kildare. The following account of his life has been distilled from Canon O'Hanlon's Lives of the Irish Saints, Volume 5, pages 69-95. A post on the description by Cogitosus of the tombs of Saint Brigid and Saint Conleth at Kildare can be found at my other blog Trias Thaumaturga here.
ST. CONLETH, OR CONLAID, BISHOP AND PATRON OF KILDARE DIOCESE. [FIFTH AND SIXTH CENTURIES.]