"The Temple House lands were granted to the Knight Templars in 1216 and passed to the Knights Hospitallers when the Templars were disbanded in 1311. The castle was converted to a domestic residence in 1627 and besieged and badly damaged in 1641." https://en.wikipedia.org/wiki/Temple_House_Manor_and_Castle
St John's Gate Clerkenwell used to be the centre for the Knights Hospitallers, who started off as hospital workers in the Crusades and were gradually transformed into a military order. They were also known as the Order of St John which eventually became St John's Ambulance. Their museum is now within the gatehouse structure.
Introducing our final new hotel in Portugal - Pousada Mosteiro do Crato in Crato. Experience Portugal's medieval heritage with a luxury escape at Pousada Mosteiro do Crato. Originally built during the 14th century, it was the headquarters of the Knights Hospitaller. Over the years its rosy stone walls have housed a gothic church, a Renaissance convent and a lavish manor house. http://www.slh.com/hotels/pousada-mosteiro-do-crato/
Military Orders and the Crusades: Knights Templar and Knights Hospitaller