Рамиро II
The conquest of the county by Aragonese Christians was in the 10th century, although the name of “Fonte Calderas” (“Hot Source”) does not appear until 1137 in a donation by the Aragonese king Ramiro II "The Monk". As a result of the conquest a defense tower was built in the place called the “Pacatorre”, to whose protection began to form Fuencalderas.