1. Ancestors

2. In fiction and literature

3. References

Petronilla of Aquitaine ({{circa}} 1125 – 1193) was the second daughter of William X of Aquitaine and Aenor of Châtellerault. She was the elder sister of William Aigret and the younger sister of Eleanor of Aquitaine, who was Queen consort of France, later England. She is variously called Alix (or Aelith in Occitan) and Petronilla; she typically went by Alix after her marriage, while Petronilla seems to have been her childhood name (she is referred to as such in her father's will).

Petronilla accompanied her sister to the French court, where she met Count Raoul I of Vermandois, who was a married man and a cousin to her brother-in-law Louis VII of France. He repudiated his wife and married her, and they were excommunicated by the Pope. Pope Innocent II promised to lift the excommunication, but recanted his promise in 1143. Hostilities flared, and Louis VII infamously burned Vitry-le-François. Finally the Pope died and his successor Pope Celestine II lifted the excommunication at Council of Reims in 1144. However, Petronilla and Raoul divorced in 1151, and he remarried the next year. Petronilla remained a member of the French royal court and a constant companion to her sister Eleanor while she was imprisoned by her husband King Henry II in England and Wales. After Henry's death, Eleanor was freed, and Petronilla planned on returning to France. Yet, records of Petronilla after 1189 are scarce. It is believed that she came down with a fever on her voyage from England back to France and died in early 1190 before her arrival at port.

Together Raoul and Petronilla had three children:

• Elisabeth, Countess of Vermandois also known as Isabelle Mabile (1143 – 28 March 1183), married Philip, Count of Flanders.
• Ralph II, Count of Vermandois (1145–1167), married Margaret I, Countess of Flanders.
• Eleanor, Countess of Vermandois (1148/49 – 1213), married four times.

Ancestors

In fiction and literature

• Kristiana Gregory – Eleanor Crown Jewel of Aquitaine: France, 1136. Scholastic Inc. (2002). {{ISBN|0-439-16484-2}}. She is mentioned as Petronilla and sometimes just Petra in this fictional diary of her sister, Eleanor.
• Alison Weir – "The Captive Queen" She is portrayed as an alcoholic, eventually dying of this disease
• Petronilla plays a significant part in Cecelia Holland's historical novel, The Secret Eleanor (2010). Set in the years 1151–1152, the novel is centered on Eleanor's relationship with Petronilla; it narrates the meeting of Eleanor and Henry Plantagenet, the beginning of their love affair, Eleanor's annulment of her marriage to Louis VII, and Petronilla's role helping her sister in these events, in a fictional secret history concordant with the known facts of their lives.
• Petronilla is a main character in Elizabeth Chadwick's "The Summer Queen," (2014) the story of Eleanor. It seems to be a semi-accurate historical depiction of their lives.

References

• Kerrebrouck, Patrick van (2000). Les Capétiens 987–1328.

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