Hsinbyumashin
She orchestrated the massacre of upward of 100 members of the royal family , it was an edict by Hsinbyumashin that ordered almost all possible heirs to the throne be killed , so that her daughter Supayalat and son-in-law Thibaw Min would become queen and king . 
<triplet> Hsinbyumashin <subj> Supayalat <obj> child <triplet> Supayalat <subj> Thibaw Min <obj> spouse <triplet> Thibaw Min <subj> Supayalat <obj> spouse