Petronila of Aragon

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Aragonese and Navarrese Royalty
House of Aragon
Ramiro I
Children include
   Sancho Ramirez (future Sancho I of Aragon and V of Navarre)
Sancho I (V of Navarre)
Children include
   Peter (future Peter I of Aragon and Navarre)
   Alfonso (future Alfonso I of Aragon and Navarre)
   Ramiro (future Ramiro II of Aragon)
Peter I (I of Navarre)
Alfonso I (I of Navarre)
Ramiro II
Children include
   Petronila (future Petronila I)
Petronila
Children include
   Dulce Berenguer, Queen of Portugal
   Alfonso (future Alfonso II of Aragon)
   Ramon Berenguer III, Count of Provence
   Sancho, Count of Provence

Petronila, Petronilla, or Petronella (Aragonese and Catalan:Peronella; Spanish: Patronilla Ramírez) (1135October 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.

Petronila came to the throne through special circumstances. Her father, Ramiro, was bishop of Barbastro-Roda when his brother, Alfonso I, died heirless in 1134. As king, Ramiro received a papal dispensation to abdicate from his monastic vows in order to secure the succession to the throne. King Ramiro the Monk, as he is known, married Agnes, daughter of Duke Wiliam IX of Aquitaine and Gascony, and through her produced an heiress, Petronila. At two years old, Petronila was bethrothed to Ramon Berenguer IV, Count of Barcelona and, immediately thereafter, Ramiro abdicated in favour of the count and returned to monastic life.

Petronila married Ramon Berenguer in 1150. Upon his death, Petronila renounced the crown of Aragon in favour of her eldest son, Ramon, who, in compliment to the Aragonese, changed his name to Alfonso. Her son was the first ruler of both Aragon and Catalonia (where he is known as Alfonso I) thereby establishing the dynastic union between the two countries that lasted until the Crown of Aragon was dissolved in 1707.

Preceded by
Ramiro II
Queen of Aragon
11371162
Succeeded by
Alfonso II