Lives of the Saints, by Alban Butler, Benziger Bros. ed. [1894], at sacred-texts.com
ST. GOAR was born of an illustrious family, at Aquitaine. From his youth he was noted for his earnest piety, and, having been raised to sacred orders, he converted many sinners by the fervor of his preaching and the force of his example. Wishing to serve God entirely unknown to the world, he went over into Germany, and settling in the neighborhood of Trier, he shut himself up in his cell, and arrived at such an eminent degree of sanctity as to be esteemed the oracle and miracle of the whole country. Sigebert, King of Austrasia, learning of the sanctity of Goar, wished to have him made Bishop of Metz, and for that purpose summoned him to court. The Saint, fearing the responsibilities of the office, prayed that he might be excused. He was seized with a fever, and died in 575.