Cannot seem to parse the following clue as there seems to be an extra "t" or "s" in the answer if I'm not barking up the wrong tree. I think the answer is "starosty" or maybe "starosta" but cannot parse either of them. Here's the clue......
Wherein Polish noble ruled, dissolute sort in time of residence (8)
S?A?O?T?.
Time of residence is confusing me...."stay" or "a sty"?