Fra' Ludwig Hoffmann von Rumerstein was a Grand Commander of the Sovereign Military Order of Malta. He was acting head of the order for some months in 2017.

Fra' Robert Matthew Festing GCStJ OBE TD DL was an English Roman Catholic official who was the Prince and Grand Master of the Sovereign Military Order of Malta from 2008 until his resignation on 28 January 2017, following a dispute with the Vatican.