Eudokia Angelina
She was a daughter of Alexios III Angelos and Euphrosyne Doukaina Kamatera . 
<triplet> Alexios III Angelos <subj> Euphrosyne Doukaina Kamatera <obj> spouse <triplet> Euphrosyne Doukaina Kamatera <subj> Alexios III Angelos <obj> spouse