|Intro||Youngest son of Louis VI of France and his second queen consort, Adélaide de Maurienne|
|A.K.A.||Pierre de France|
|Birth||1 September 1126 (Reims, arrondissement of Reims, Marne, Grand Est)|
|Death||10 April 1183 (Acre, Acre Subdistrict, Northern District, Israel)|
Peter I of Courtenay (September 1126 – 10 April 1183) was the youngest son of Louis VI of France and his second wife, Adélaide de Maurienne. He was the father of the Latin Emperor Peter II of Courtenay.
Peter was born in France and died in Palestine. In about 1150, he married Elizabeth de Courtenay (1127 – September 1205), the daughter of Renaud de Courtenay and Hawise du Donjon, thus starting the Capetian line of the House of Courtenay.
Rumor has it that he is buried in a tomb in the floor of Exeter Cathedral, next to Elizabeth, however no physical evidence currently exists and the Historians at the Cathedral can find no documentation to support this rumor. The couple had ten children:
- Phillip (1153 – before 1186)
- Peter II, Latin Emperor of Constantinople (c. 1155 to 1218)
- Unnamed daughter (c. 1156 – ?)
- Alice (died 12 February 1218), married Count Aymer of Angoulême
- Eustachia (1162–1235), married firstly William of Brienne, son of Erard II of Brienne and of Agnès of Montfaucon, secondly William of Champlitte
- Clémence (1164 – ?)
- Robert, Seigneur of Champignelles (1166–1239), married in 1217 Mathilde of Mehun (d. 1240). Their eldest son was Peter of Courtenay, Lord of Conches.
- William, Seigneur of Tanlay (1168 – before 1248)
- Isabella (1169 – after 1194)
- Constance (after 1170–1231)