Anna Komnene Angelina
She was the daughter of the Byzantine Emperor Alexios III Angelos and of Euphrosyne Doukaina Kamatera . 
<triplet> Alexios III Angelos <subj> Euphrosyne Doukaina Kamatera <obj> spouse <triplet> Euphrosyne Doukaina Kamatera <subj> Alexios III Angelos <obj> spouse