She is said to have been brought up by St. Brigid of Kildare. Monenna founded a number of convents in Scotland and England and also founded a monastery of nuns in Faughart, Co. Louth, One night the nuns were disturbed by sounds of profane merriment from the homesteads lower down the hill, and when they enquired the cause were told that there was a wedding party in one of the houses. Moninne and her sisters, who knew no other espousal than that of Christ, thereupon determined to seek for themselves a place more suited to their way of life.