In Irish mythology Conand (a.k.a. Conann and Conaing) was a leader of the Fomorians who lived in a tower on Tory Island. He oppressed the followers of Nemed, demanding a huge tribute of their produce and children. Eventually Nemed's people rose up and killed him, destroying his tower. After his death, Morc, another Fomorian massacred Nemed's surviving followers.
References
Conand (mythology) Wikipedia(Text) CC BY-SA