A cup-bearer was an officer of high rank in royal courts whose duty it was to serve the drinks at the royal table. On account of the constant fear of plots and intrigues, a person must be regarded as thoroughly trustworthy to hold the position. He must guard against poison in the king's cup and was sometimes required to swallow some of the wine before serving it. His confidential relations with the king often gave him a position of great influence. The position of cup bearer is greatly valued and given to only a select few throughout history.