The Collaborative International Dictionary of English v.0.48:

Uncelebrated \Uncelebrated\
   See celebrated.

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "uncelebrated":
   ignotus, inglorious, little known, nameless, no credit to, obscure,
   renownless, undistinguished, unfamed, unglorified, unheard-of,
   unhonored, unknown, unnotable, unnoted, unnoticed, unpopular,
   unremarked, unrenowned, unsung