This saint, born in 1474, has the double distinction of founding the first of what are now called “secular institutes” (the Company of Saint Ursula) and the first teaching order of women in the Church. She is featured on four Vatican stamps, including one stamp that is part of the iconic "Council of Trent" issue of 1946. She is the patron saint of teachers and educators, and her feast day is January 27th. Who is this saint?