Meagher's early life in Ireland, marked by British oppression, set the stage for his experiences and the struggles of many Irish immigrants. The harsh conditions and systemic discrimination they faced in Ireland fueled their desire for freedom and equality in America. Upon arriving in America, Meagher, like many Irish immigrants, encountered significant prejudice and social exclusion. Despite these challenges, the Irish immigrant community remained resilient, preserving their cultural heritage and forming supportive communities. Egan portrays how these immigrants clung to their identity through music, literature, and social practices, emphasizing the importance of cultural resilience.

Meagher's involvement in the American Civil War, where he led the Irish Brigade, highlights the contributions of Irish immigrants to their new country. Their loyalty and bravery in key battles spoke to their desire to prove their worth and integrate into American society. Egan uses Meagher's military service to illustrate how Irish immigrants sought to gain acceptance and forge their place in their adopted homeland.

The tension between maintaining Irish identity and assimilating into American society is a recurring motif in the book. Accents were one of the most prominent cultural markers distinguishing Irish immigrants. Meagher's Irish accent set him apart, both positively and negatively.