See the Life of John the eleemosynary by his contemporary Leontius, bishop of Neapolis in Cyrus, whose Greek text, either lost or hidden, is reflected in the Latin version of Baronius (A.D. 610, No.9, A.D. 620, No. 8.). Pagi (Critica, tom. ii. p. 763) and Fabricius l. v c. 11, tom. vii. p. 454) have made some critical observations.