Another theory proposes that ''Cale'' or ''Calle'' is a derivation of the Celtic word for port, like the Irish ''caladh'' or Scottish Gaelic ''cala''. These explanations, would require the pre-Roman language of the area to have been a branch of Q-Celtic, which is not generally accepted because the region's pre-Roman language was Gallaecian Celtic, usually considered P-Celtic. However, scholars like Jean Markale and Tranoy propose that the Celtic branches all share the same origin, and placenames such as Cale, Gal, Gaia, Calais, Galatia, Galicia, Gaelic, Gael, Gaul, Wales, Cornwall, Wallonia and others all stem from one linguistic root.