Answer
Irish identity is a recurring theme in Colm Tóibín's writing. His works often delve into the complexities of Irish history, culture, and society, exploring the nuances of national identity and the individual's place within it. Tóibín's characters often grapple with questions of belonging, cultural heritage, and the impact of the past on the present, reflecting his own interest in the shaping of Irish identity and its multifaceted nature.