
a religious military order that was founded at Jerusalem in the 11th century and that, headquartered in Rome, continues its humanitarian tasks in ... [18 related articles]
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http://www.britannica.com/eb/a-z/h/72

Hospitallers are charitable brotherhoods who devote themselves to tend the sick in hospitals. The name is specially applied to an order of knights, the Knights of St. John.
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http://www.probertencyclopaedia.com/browse/AH.HTM
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