Background
O'Brien, Sean M. was born in 1953.
O'Brien, Sean M. was born in 1953.
University of South Dakota (Bachelor of Arts). University of South Dakota (Juris Doctor).
Worked at P.O. Box 421 (Brookings, South Dakota) specializing in Commercial Law, Civil Litigation, Domestic Relations Law, Criminal Defense Law. Admitted to the bar, 1982.