Petronilla (29 June  /11 August  1136 – 15 October 1173), whose name is also spelled Petronila or Petronella ( Aragonese: Peyronela or Payronella,  and Catalan: Peronella ), was Queen of Aragon (1137–1164 ) from the abdication of her father, Ramiro II, in 1137 until her own abdication in 1164.
Petronila, Petronilla, or Petronella (Aragonese and Catalan:Peronella; Spanish: Patronilla Ramírez) (1135 – October 17, 1174, Barcelona) was Queen of Aragon from 1137 until 1162. She was the daughter of Ramiro II, King of Aragon, and Agnes of Aquitaine.
Petronilla (1135–1174)Queen of Aragon. Born in 1135; died on October 17, 1174, in Barcelona, Spain; daughter of Ramiro II, king of Aragon (r. 1134–1137), and Agnes de Poitiers ; married Ramon Berenguer also known as Raymond Berengar IV, count of Provence and king of Aragon (r.
role in Spain In Spain: The medieval empire, 1035–1157 …marrying and fathering a child, Petronila, who could inherit the kingdom, Ramiro returned to his monastery. Petronila was betrothed in 1137 to Count Ramon Berenguer IV of Barcelona (1131–62), who assumed responsibility for the governance of the kingdom.
His marriage to Agnes of Aquitaine (aunt of Eleanor of Aquitaine) was quickly arranged, and she promptly conceived. Petronila, who was to be their only child, was born on 29 June 1136. She was just one year old when she was betrothed to Raymond Berengar IV, Count of Barcelona, who was 24 years old at the time.
Ramon Berenguer IV died on 6 August 1162 in Borgo San Dalmazzo, Piedmont, Italy. He was succeeded by Petronilla and then by his eldest surviving son, Ramon Berenguer, who also inherited the Kingdom of Aragon upon Petronilla's abdication in 1164. He changed his name to Alfonso as a nod to his Aragonese lineage, and became Alfonso II of Aragon.
Petronilla , whose name is also spelled Petronila or Petronella , was Queen of Aragon 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 . She was the last ruling member of the Jiménez dynasty in Aragon, and by marriage brought the throne to the House of Barcelona.
He and Agnes had a daughter, Petronilla, who was betrothed to Count Ramon Berenguer IV of Barcelona at the age of one.  The marriage contract, signed at Barbastro on 11 August 1137, made Petronilla the heir to the crown of Aragon, which in event of her childless death would pass to Ramon Berenguer and any children he might have by other wives.
Petronilla (29 June/11 August 1136 – 15 October 1173), whose name is also spelled Petronila or Petronella (Aragonese: Peyronela or Payronella, and Catalan: Peronella), was Queen of Aragon (1137–1164) from the abdication of her father, Ramiro II, in 1137 until her own abdication in 1164.
Alfonso II (1–25 March 1157    – 25 April 1196), called the Chaste or the Troubadour, was the King of Aragon and, as Alfons I, the Count of Barcelona from 1164 until his death.   The eldest son of Count Ramon Berenguer IV of Barcelona and Queen Petronilla of Aragon,  he was the first King of Aragon who was also Count of Barcelona.