Cupbearer

n.	1.	One whose office it is to fill and hand the cups at an entertainment.
	2.	(Antiq.) One of the attendants of a prince or noble, permanently charged with the performance of this office for his master.

Noun

1.

cupbearer - the attendant (usually an officer of a nobleman's household) whose duty is to fill and serve cups of wine

attendant, attender, tender