A steward is an official who is appointed by the legal ruling monarch to represent them in a country, and may have a mandate to govern it in their name; in the latter case, it roughly corresponds with the position of viceroy (for Romance languages), governor, or deputy (the Roman rector, praefectus or vicarius). It was also a term used to refer to the chief servant of a landed estate.
From Old English stíweard, stiȝweard, from stiȝ "hall, household" + weard ", keeper"; corresponding to Dutch: stadhouder, German Statthalter "place holder", a Germanic parallel to French lieutenant.
The Old English term stíweard is attested from the 11th century. Its first element is most probably stiȝ- "house, hall" (attested only in composition; its cognate stiȝu is the ancestor of Modern English sty). Old French estuard and Old Norse stívarðr are adopted from the Old English.
The German and Dutch term (Middle High German stat-halter) is a parallel but independent formation (a calque of lieutenant) corresponding to obsolete English stead holder (stede haldare 1456; also stedys beryng (1460), sted-haldande (1375) steadward, steadsman).
In medieval times, the steward was initially a servant who supervised both the lord's estate and his household. However over the course of the next century, other household posts arose and involved more responsibilities. This meant that in the 13th century, there were commonly two stewards in each house—one who managed the gang estate and the other, the majordomo, to manage domestic routine. Stewards commonly earned up to 3 to 4 pounds per year. Stewards took care of their lord's castles when they were away. Also, stewards checked on the taxes of the serfs on his lord's manor.