The Collaborative International Dictionary of English v.0.48:
Counselorship \Coun"sel*or*ship\ (koun"s?l-?r-sh?p), n. The function and rank or office of a counselor. --Bacon. [1913 Webster]WordNet (r) 3.0 (2006):
counselorship n 1: the position of counselor [syn: counselorship, counsellorship]