This article is devoted to the analysis of the representation of the image of Cu Сhulainn in the Irish historical memory in the Gaelic revival. The author reveals the image of a mythical character from the Ulster cycle. The researcher revealed the meaning of the hero in the works of W. B. Yeats. Cu Сhulainn became a national hero and became a symbol of Irish identity. And the legends served as an ideological basis for the development of nationalism and the struggle of the Irish for the independence of the country.