Barbara of Oleśnica
She was the only child of Konrad IX the Black , Duke of Oleśnica by his wife Margareta , daughter of Duke Siemowit V of Rawa . 
<triplet> Konrad IX the Black <subj> Margareta <obj> spouse <triplet> Margareta <subj> Konrad IX the Black <obj> spouse <subj> Siemowit V of Rawa <obj> father <triplet> Siemowit V of Rawa <subj> Margareta <obj> child