Eunuchs would probably be servants or slaves who, because of their function, had been castrated, usually in order to make them reliable servants of a royal court where physical access to the ruler could wield great influence.[3] Seemingly lowly domestic functions—such as making the ruler's bed, bathing him, cutting his hair, carrying him in his litter, or even relaying messages—could in theory give a eunuch "the ruler's ear" and impart de facto power on the formally humble but trusted servant. Similar instances are reflected in the humble origins and etymology of many high offices (e.g., chancellor originally denoted a servant guarding the entrance to an official's study). Eunuchs supposedly did not generally have loyalties to the military, the aristocracy, nor to a family of their own (having neither offspring nor in-laws, at the very least), and were thus seen as more trustworthy and less interested in establishing a private 'dynasty'. Because their condition usually lowered their social status, they could also be easily replaced or killed without repercussion. In cultures that had both harems and eunuchs, eunuchs were sometimes used as harem servants (compare the female odalisque) or seraglio guards.
The practice was also well established in other Mediterranean areas among the Greeks and Romans, although a role as court functionaries does not arise until Byzantine times. The Galli or Priests of Cybele were eunuchs.
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