The Nuns of St Ambrose (Ambrosian Sisters) wore a habit of the same colour as the Brothers of St Ambrose, conformed to their constitutions, and followed the Ambrosian Rite, but were independent in government. Pope Sixtus IV gave the nuns canonical status in 1474. Their one monastery was on the top of Monte Varese, near Lago Maggiore, on the spot where their foundress, the Blessed Catarina Morigia (or Catherine of Palanza), had first led a solitary life.