Little is known on Molua other than he was a monk, a builder and possibly a hermit. Molua was the founder of Killaloe (), which bears his name "Lua". Molua had his oratory on Friar's Island, later replaced by a stone church near the present village of Killaloe. Like most Irish saints he appears to have been very hospitable, believing that in entertaining others he was entertaining Christ. He was kind to animals as well as humans and it was said that when he died all living creatures bewailed him.