The Collaborative International Dictionary of English v.0.48:
Anciently \An"cient*ly\, adv. 1. In ancient times. [1913 Webster] 2. In an ancient manner. [R.] [1913 Webster]WordNet (r) 3.0 (2006):
anciently adv 1: in ancient times; long ago; "a concern with what may have happened anciently"