Founded by Wolfgang Rothbauer in 1994, it was a few years before their debut Grotesque Autumnal Weepings in 1997.
Later, in 1998, they gained French guitarist Matias Larrede and in 1999 they signed with Napalm Records.
In 2001 Thirdmoon split with Napalm Records and it was three years before their next release, Sworn Enemy: Heaven.
In April 2007 they signed a new deal with German-based Label Maintain Records for their 5th album, which was released in autumn 2007.
[1] Their 6th studio album Terrarum Exuviae was released on December 1, 2018.