Related Name Family Tree for the element "gíall"

gēstlos Old Celtic (word)		gíall Old Irish (word)
		gwystyl Old Welsh (word)

com Old Irish (word) + gíall Old Irish (word)		Comgall m Old Irish (given name)		Comgal m Old Irish (given name)
				Comhghall m Irish (Rare) (given name)		Cowal m Irish (Rare) (given name)