cf. Ep. xxxiii., lxxv., cxlvii., clxxviii., ccciv., and also cxcvi., though the last is also attributed to Greg. Naz.  He was an important lay compatriot of Basil.  Tillemont was of opinion that the dear brother Gregory referred to in this letter is Gregory of Nyssa; but Maran points out that the events referred to are the same as those described in Letter xxxii., and supposes the word episcopus to have been inserted by a commentator.