Emmanuel de Rohan Polduc
Fra Emmanuel de RohanPolduc was a member of the wealthy and influential Rohan family of France, and 70th Prince and Grand Master of the Order of St. John from 1775 to 1797.
De Rohan was born in la Mancha, Spain onApril 1725. His father was French, but had been banished to Spain. He served in the courts of Madrid and Parma, before becoming an ambassador to Francis I. He eventually joined the Order of St. John, and served in several posts. He was considered as a potential successor to Grand Master Manuel Pinto da Fonseca following his death in 1773, but Francisco Ximenes de Texada was elected instead. Ximenes magistracy was unpopular due to the Orders bankruptcy. He died in 1775, and was succeeded by De Rohan.
Source: Wikipedia