The book investigates the historical and genealogical links between Ulster and North America through the lens of heraldry. It examines how coats of arms served as markers of identity, lineage, and migration for individuals and families moving between these regions. The work likely explores the evolution of heraldic practices and their significance in establishing and maintaining connections across the Atlantic.

The subject matter suggests a scholarly work aimed at those with an interest in heraldry, genealogy, and the history of Ulster and its diaspora. The focus on specific historical connections implies a detailed and research-driven approach. It is likely to be of value to academic researchers and amateur genealogists alike.