Bertrand de Thessy
Grandmaster of the Knights Hospitallers / From Wikipedia, the free encyclopedia
Bertrand de Thessy (died 1231 at Acre), also known as Bertrand of Thercy, was the fifteenth Grand Master of the Knights Hospitaller, serving between 1228 and 1230 or 1231.[1] He succeeded Guérin de Montaigu upon his death on 1 March 1228. Thessy was either from France or Italy, most likely the former. He was succeeded by Guérin Lebrun.[2]