What is "altheides"

Altheides (1193–1262) was a Cypriot philosopher, primarily known from sayings attributed to him in the works of others. Little is known about the wandering philosopher known as Altheides of Cyprus, and little of his work remains available to modern scholars. His parents were Greek merchants living on the island under the rule of Guy of Lusignan. He was born a year before Guy's death, in 1193. At some point in his late teens he left Cyprus as a seaman on a Moorish trading vessel.