Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Sānumātā
Sānumātā:The name given to the Yakkhinī who had been the mother of Sānu (q.v.) in a previous birth.When the Yakkhas assembled to hear Sānu preach the Law,they paid her great respect,owing to her kinship with him. SA.i.236; DhA.iv.19.