There are three metal bands called Demonlord.

1) Demonlord is a power metal band formed in Győr, Hungary in 1997.
Members:
Balázs Jurásek - Vocals and Bass
András Nagy - Lead Guitar and Vocals
Gábor Kovács - Guitars and Vocals
Zoltán Világi - Drums
Discography:
1999 Adventures In Hell
2002 Helltrust
2006 Hellforged
2011 Only The Dead Are Safe
http://www.demonlord.hu
2) A black metal band from Spain formed in 2000. They released two demos (Unsacred Soul 2000; As Bastard as God 2001) and a split album with Nocturn (from Barcelona). They changed their name to Daemonlord in 2002.
3) A black metal band from Portugal. Formation date and more exact origins unknown, as is the current status and the lineup. They released two demos, the second in 2001. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.