Tychonius is an interestng character I was introduced to when I read Frend’s “The Donatist Church” (https://orthodoxchristiantheology.com/2015/12/11/reflections-on-the-donatist-church-by-william-hugh-clifford-frend/). Shameless Orthodoxy has published a more in depth article on his allegorical interpretation of the Scriptures, which though he was a heretic was employed by western Christians throughout the Middle Ages.