Isidore, St., Bishop of Seville, born at Carthagena, a distinguished man and ecclesiastic, who exercised great influence on Latin Christianity, and on both civil and ecclesiastical matters in Spain, and left a large number of writings of varied interest; he was animated at once by a severe sense of duty and by an admirable Christian spirit (570-638). Festival, April 4.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Ishmael * Isinglass