Which preposition to use with hospitallers

of Occurrences 3%

On the 1st of May, the two religious and warlike orders which had been founded in the East for the defence of Christendomthe Hospitallers of St. John of Jerusalem and the Templarslost, at a brush in Galilee, five hundred of their bravest knights.

in Occurrences 2%

We have not pictured to ourselves with sufficient vividness the Templars and the Hospitallers in the midst of one of those great battles in the Holy Land in which the fate of the world was in the balance.

in Occurrences 1%

Thus the conventual bailiff of the langue of France was always the Grand Hospitaller in charge of the Hospital of the Order, while that of England was Turcopolier, or commander of the light cavalrya survival from the Syrian days.

Which preposition to use with  hospitallers