Alphonsus Liguori (27 September 1696 – 1 August 1787), sometimes called Alphonsus Maria de Liguori or Saint Alphonsus Liguori, was an Italian Catholic bishop, spiritual writer, composer, musician, artist, poet, lawyer, scholastic philosopher, and theologian. He founded the Congregation of the Most Holy Redeemer, known as the Redemptorists, in November 1732.