Peter von Biron
Peter von Biron was the last Duke of Courland from 1769 to 1795.
Peter was born in Jelgava as the son of Ernst Johann von Biron, future Duke of Courland, and his wife Benigna von Trotha. Whenyears old, he was forced to follow his family into the Siberian exile. In 1769, Peter was given the Duchy of Courland and Semigallia by his father. He was elected a Fellow of the Royal Society in 1771.
Source: Wikipedia