Juvenilia
Juvenilia are literary, musical or artistic works produced by an author during his or her youth. Written juvenilia, if published at all, usually appear as a retrospective publication some time after the author has become well known for later works.
The term was first recorded in 1622 in George Wither's poetry collection Ivvenilia. Later, other notable poets, such as John Dryden and Alfred Lord Tennyson, came to use the term for collections of their early poetry. Jane Austen's literary works are also titled Juvenilia.