Type Word Usage Old Welsh Meaning & History Old Welsh word meaning "country, realm" [1]. Related ItemsDetails Other Languages & Cultureswlatis(Old Celtic) flaith(Old Irish) Given Name DescendantsGladys(English) Gladys(French) Gwladus(Old Welsh) Gladys(Spanish) Gladys, Gwladys(Welsh) Sources & References Matasović, Ranko. Etymological Dictionary of Proto-Celtic. Brill, 2009, page 425.