Séamus Ó Grianna and Éilís Ní Dhuibhne, whose lifespans overlapped only briefly, rank among the most prolific Irish writers of the twentieth century. Their bilingualism, moreover, offers them access to two languages, cultures, and viewpoints. Their shared interest in the Donegal Gaeltacht during the revivalist period, and their use of fiction to explore and represent it, provide their readers with a remarkable insight into the changing ideologies of twentieth-century Ireland, and particularly Irish-Ireland, touching on broad issues that are linguistic, cultural, political, gendered, and spatial. This essay begins by analyzing the narrative similarities between Ó Grianna's Mo Dhá Róisín and Ní Dhuibhne's Hiring Fair Trilogy, and proceeds to examine how both writers negotiate historical fact, the Irish language, the performance of Gaelic culture, the burgeoning women's movement, and the chasm between rural and urban Ireland of the revival. Through this approach, the essay demonstrates that the fictions of these two writers reveal as much about their own agendas and the dominant ideas of the epoch in which they were writing, as they do about life in the Donegal Gaeltacht in the early twentieth century.