Which of the nineteenth-century Kulamāna Vajrācāryas was the confrere of Ekai Kawaguchi (and of Sylvain Lévi,* et al)? Mr. Kazumi Yoshizaki digs into his Index of Personal Names in Newari Historical Materials (forthcoming) to find out:
吉崎 一美 (Yoshizaki, Kazumi). 「河口慧海に梵語文法を教授したクルマン博士」 (Dr. Kulman who Taught Sanskrit Grammar to Rev. Kawaguchi Ekai in Nepal). 『印度學佛教學研究』 第六十一巻第一号 (Journal of Indian and Buddhist studies vol.61 no.1), pp.508–504/(11)–(15), 2012-12-20. [PDF at CiNii]
* “Le vieux pandit Kulamâna, de Patan, gagne sa vie à enseigner des rudiments de catéchisme et à copier des manuscrits” (Lévi, Le Népal: étude historique d’un royaume hindou, 1905 II:27).