"A Gentleman of Limerick" offers a meticulously researched glimpse into 18th century Ireland through the life of Francis Arthur. As a wealthy Catholic merchant, Arthur used his privileged position to champion the cause of Catholic rights, making him a target for powerful members of the ascendency class. The book details his trial on concocted treason charges, his guilty verdict, and subsequent banishment from Ireland.

Kelly's work paints a vivid picture of life for Catholics in Ireland during this tumultuous period, demonstrating how even the wealthiest could fall victim to religious discrimination. Based on historical fact, the book brings to life real people, conversations, and events from this pivotal time in Irish history.