Family History
The Reilly surname is derived from the Irish **Ó Raghallaigh**, meaning "descendant of Raghallach," a personal name interpreted as "valiant" or "courageous." The Reillys were one of the most influential Gaelic families in medieval Ireland, serving as the ruling dynasty of the Kingdom of East Breifne, which covered much of present-day **County Cavan** and surrounding areas. From the twelfth through the sixteenth centuries, the Reilly chiefs controlled extensive territories, built fortified castles, and played a central role in Irish politics, often balancing alliances with neighboring Gaelic clans and Anglo-Norman lords. Their stronghold at Cavan became an important center of trade and governance. Following the Tudor conquest and the Plantation of Ulster, much of their ancestral land was confiscated, leading many Reilly families to disperse throughout Ireland. During the Great Famine of the nineteenth century, thousands emigrated to North America, Britain, and Australia. Today, the Reilly surname remains one of Ireland's most recognizable family names, representing centuries of Gaelic leadership, resilience, and enduring cultural pride.
Origins of the Coat of Arms
The Reilly coat of arms displays a green shield bearing an upright natural hand between two gold lions rampant, with five red drops of blood below. Green (vert) symbolizes hope, loyalty, joy, and Ireland's rich landscape. The raised hand is a powerful emblem of honesty, faith, sincerity, and steadfast commitment, while the two gold lions represent courage, strength, nobility, and vigilant guardianship. Gold (or) signifies generosity, wisdom, and honor. The five red drops are traditional heraldic symbols of sacrifice, bravery, and the willingness to defend family and homeland. Together, these elements commemorate the Reilly family's long history as powerful Gaelic rulers of East Breifne, reflecting their reputation for leadership, courage, and unwavering loyalty throughout Ireland's medieval and modern history.
