The Collaborative International Dictionary of English v.0.48:
Olden \Old"en\, a. Old; ancient; as, the olden time. "A minstrel of the olden stamp." --J. C. Shairp. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Olden \Old"en\, v. i. To grow old; to age. [R.] [1913 Webster] She had oldened in that time. --Thackeray. [1913 Webster]WordNet (r) 3.0 (2006):
olden adj 1: long past; "olden days"