Feradhach mac Lughaidh
Feradhach mac Lughaidh, 8th king of Uí Maine, fl. 6th-century. John O'Donovan remarked that "Feradhach, the son of Lughaidh, was prince of Hy-Many for twenty-four years, when he was slain by his successor." References

 http://www.rootsweb.ancestry.com/~irlkik/ihm/uimaine.htm
 Annals of Ulster at CELT: Corpus of Electronic Texts at University College Cork
 Annals of Tigernach at CELT: Corpus of Electronic Texts at University College Cork
 Revised edition of McCarthy's synchronisms at Trinity College Dublin. Irish Kings and High-Kings, Francis John Byrne, Dublin (1971;2003) Four Courts Press, 
 History of the O'Maddens of Hy-Many, Gerard Madden, 2004. . The Life, Legends and Legacy of Saint Kerrill: A Fifth-Century East Galway Evangelist by Joseph Mannion, 2004. 
 http://www.ucc.ie/celt/published/G105007/index.html

Nobility from County Galway
Nobility from County Roscommon
6th-century Irish monarchs
Kings of Uí Maine