Dulce of Aragon
As the eldest daughter of Ramon Berenguer IV , Count of Barcelona and his wife , Queen Petronila of Aragon , she was the sister of the future King Alfonso II of Aragon . 
<triplet> Ramon Berenguer IV, Count of Barcelona <subj> Petronila of Aragon <obj> spouse <triplet> Petronila of Aragon <subj> Ramon Berenguer IV, Count of Barcelona <obj> spouse <subj> Alfonso II of Aragon <obj> child <triplet> Alfonso II of Aragon <subj> Ramon Berenguer IV, Count of Barcelona <obj> father <subj> Petronila of Aragon <obj> mother