plea. Notes References Biron, Charles de Gontaut, duc de Biron, Charles de Gontaut, duc de People from Gers Charles de Gontaut, duc de Charles Biron, Charles de Gontaut, duc de Biron, Charles de Gontaut, duc de Biron, Charles de Gontaut, duc de Biron, Charles de Gontaut, duc de Biron, Charles de Gontaut, duc de 17th-century executions by France Biron Executed people from Midi-Pyrénées Prisoners of the Bastille Peers created by Henry IV of France 16th-century peers of France 17th-century peers of France