This letter of Boniface I to Bishop Rufus, his vicar in Illyricum, was preserved only in the Collectio Thessalonicensis with the date of 18 September 419, but with the salutation from Pope Leo I (440-461) to Bishop Anastasius of Thessalonica. Therefore Coustant attributed the whole letter to Boniface, whereas Silva-Tarouca broke it in two parts, attributing the first one to Leo, and the second to Boniface (this is Letter 27 in his edition of Collectio Thessalonicensis). The passage that is of interest to us is anyway in this second part. It regards Perigenes, a presbyter of Corinth, who after many years of service in his city was ordained as the bishop of Patras, but not accepted by the people there, and in 419 elected the bishop of Corinth. His case is also presented in Letters 4 and 15 of Boniface I, and his transfer from Patras to Corinth is confirmed by Socrates, Ecclesiastical History, 7, 36.