OBrian
OBrian is a surname and, less commonly, a given-name variant. It is a variant spelling of the more common O'Brien, which derives from the Irish Gaelic Ó Briain, meaning "descendant of Briain." The personal name Briain or Brian is of complex origin but is traditionally associated with nobility; the surname Ó Briain connects a family line to historic Gaelic dynasties, notably the line associated with Brian Boru.
Usage and distribution: The standard spelling O'Brien is far more common in Ireland and among the Irish
In culture and commerce: OBrian can appear in fictional works or as a corporate or brand name
Notable people: There are individuals with the surname OBrian, but no single widely recognized figure dominates;