Seneschal

Seneschal (fem. "seneschale") is a very old term for the senior servant of a noble household. The word is recorded in English since 1393, deriving via Old French seneschal, from Frankish Latin siniscalcus, itself from Proto-Germanic roots sini- "senior" and skalk "servant" (as in "marshal" etc.).

Roughly equivalent titles/positions would be "majordomo", "steward" or in later centuries, "head butler", although the seneschal also had to oversee the lands of his liege, and sometimes administer justice.