Dulce of Aragon also called Dulce of Barcelona, was Queen of Portugal as the wife of King Sancho I of Portugal.

Petronilla, whose name is also spelled Petronila or Petronella, was Queen of Aragon (1137–1164) from the abdication of her father, Ramiro II, in 1137 until her own abdication in 1164. After her abdication she acted as regent during the minority of her son Alfonso II of Aragon (1164–1173). She was the last ruling member of the Jiménez dynasty in Aragon, and by marriage brought the throne to the House of Barcelona.