Pierre Philippe Jean Marie d'Orléans was Duke of Penthièvre and a grandson of French king Louis Philippe I and of Brazilian Emperor Pedro I. Declining a proposal to marry into the Brazilian royal family, he chose a naval career and fathered two children without marrying. Prince Pierre was an officer in the Union and French Navies and a global traveler.
- Occupation
- explorer, military officer
- Citizenship
- France
- Born
- November 4, 1845
- Died
- July 17, 1919
