Templeman, SIL, p. 49. Disciple of Naropa. But Dharmamati is also said to be name of one of the Pham mthing pa brothers. This could be a false Sanskritization of [Mar pa] Chos kyi blo gros (but then again, it is likely Mar pa was named after the Pham mthing pa).
Ldan dkar ma (Lalou no. 612) lists his Bsgom pa'i rim pa.
Lo Bue, Newar Scholars, p. 644 (one of the Pham mthing pa brothers), 646 (he went to Wu-t'ai Shan and evidently died there).