Dear Madhav,I can't speak for Aṅgulimāla and Aññākoṇḍañña but the name Maitrāyaṇīputra occurs often in Buddhist Sanskrit texts as the name of the monk Pūrṇa (Puṇṇa Mantāṇīputta/Mantāṇiputta in Pali). Maybe that is helpful in some way?Best wishes,Charlie--Charles DiSimonePromotionsprogramm Buddhismus-StudienInstitut für Indologie und TibetologieLudwig-Maximilians-Universität München