Save Gender Feminine Usage Old Irish [1] Meaning & History From Old Irish túath "people, country" and flaith "ruler, sovereign, princess". Related Names Rootstúath + flaith Categories leadership, people, princess, royalty, rulers Sources & References O'Brien, Kathleen M. Index of Names in Irish Annals, available from https://medievalscotland.org/kmo/AnnalsIndex/Feminine/Tuathflaith.shtml.