67%RatingSave Gender Masculine Usage Irish Mythology Meaning & History Means "the sea" in Old Irish. Ler was probably an Irish god or personification of the sea, best known as the father of Manannán mac Lir. Related NamesFamily Tree·Details RootlerVariantLirOther Languages & CulturesLlŷr, Llyr(Welsh Mythology) User SubmissionLér Categories deities, isograms, ocean, ocean deities, personifications, water