The O'Regan Family Name
O'Regan belongs to the Regan family of names, which has Irish roots.
The O' in front of the name is a particle that was often added to Regan in records. Census takers and immigration officers often wrote what they heard.
Heraldry is personal: arms associated with the Regan surname were borne by specific families, and sharing the name does not mean sharing the blazon. Research your O'Regan family history with a full surname report and painted coat of arms.