Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Sumangalamātā Therī
Sumangalamātā Therī:She was born in a poor family of Sāvatthi and was married to a rush-plaiter (nalakāra).
Her first child was a son,named Sumangala,who left the world and became an arahant (See Sumangala 7).
She became a nun,and one day,while reflecting on all she had suffered in the lay life,she was much affected,and,her insight quickening,she became an arahant.Thig.vss.23-24; ThigA.28f.