Thanks to several colleagues who responded to my question.  In spite of irregular phonetic connection between Sanskrit Maitrāyaṇī and Pali Mantānī, it is now clear that Sanskrit Buddhist texts use the expression Maitrāyaṇīputra matching the Pali Mantānīputta.

Madhav Deshpande

On Sat, Jan 9, 2016 at 11:15 AM, Charles DiSimone <> wrote:
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,

Charles DiSimone
Promotionsprogramm Buddhismus-Studien
Institut für Indologie und Tibetologie
Ludwig-Maximilians-Universität München

Madhav M. Deshpande
Professor of Sanskrit and Linguistics
Department of Asian Languages and Cultures
202 South Thayer Street, Suite 6111
The University of Michigan
Ann Arbor, MI 48104-1608, USA