sentences:  After the sack of the College of Theodosius, the site lay barren for 62 years, until it was re-established by St. Illtud c. 508.According to the Book of Llandaff, St. Dubricius commissioned Illtud to re-establish the college, and the place came to be known as Llanilltud Fawr.According to Iolo Morganwg's oft-quoted but generally incorrect "Iolo MSS" (see Historical Sources below), Illtud founded seven churches at the college, with seven enclosures, and appointed seven companies to each church, with seven cells for each company, and each company constituting a choir, with seven learned men in each cell.