O'Reilly Family Crest mug

An O’Reilly Family Crest mug makes a thoughtful gift for any family celebration. Beautifully illustrated. Carefully researched. Uniquely personal.

Eminently suited for a proper brew! Whether it’s a gift to mark a milestone birthday, a new home, or Christmas morning — here’s an artwork with history in your hands. 

Origin of the O’Rilley name

Ó Raghallaigh is the original Gaelic form of the surname O’Riley, meaning “descendant of Raghallach.” The name is historically linked to County Cavan and the kingdom of Breifne, where the family were recorded as princes of East Breffny. This heritage places the surname deeply within medieval Irish history. Over time, the surname evolved into English forms such as O’Riley and O’Reilly, while the Gaelic version remains the older and historically precise form. Different branches of the family, recorded in various times and places, have led to variations in the heraldic representation, yet each version remains an integral part of the broader O’Reilly legacy.

Symbolism of the O’Rilley coat of arms

The O’Riley coat of arms is traditionally depicted with an Irish crown as the crest, from which a tree rises entwined by a serpent. In heraldic tradition, the crown symbolizes authority and noble standing, while the tree represents life, endurance, and the continuity of family lineage. The serpent symbolises wisdom, protection, and vigilance. The lions on the shield represent military strength and courage and the hand is associated with faith, sincerity, and justice. The family motto most frequently linked to this crest is Fortitudine et prudentia, meaning “With fortitude and prudence.”

About the artist

Each coat of arms in the Family Crests Store is an artwork by heraldic artist Éamonn Breathnach. All are carefully researched, drawing from the earliest available records across multiple heraldic archives. Noted for their elegance and attention to detail, these artworks make meaningful gifts for family occasions.

Product details

• High quality white ceramic mug with the family crest printed both sides
• Dishwasher and microwave safe
• 15 oz mug dimensions: 4.7″ (11.9 cm) in height, 3.3″ (8.5 cm) in diameter