Henry's book was called “Assertio Septem Sacramentorum” or Defence of the Seven Sacraments. Martin Luther had nailed his 95 thesis to the church door in Wittenberg, Germany on the 31 October 2017. read more
Answer . The book Henry wrote was called "In Defense of the Seven Sacraments" for which he received the title "Defender of the Faith" from Pope Leo. read more