History of Sigma Chi The Seven Founders of Sigma Chi Founding of Alpha Alpha Chapter President's Page Current Brothers Our Literature Alumni Page Philanthropy Pictures from the Brothers					Brother David Joseph MacGregor Tivin David.tivin@hws.edu  Hometown: North Kingston, RI  Big Brother: Ryan Michael Hallings  House Position: Recruitment Chair  David is a double major in Political Science and Public Policy Studies and is a member of the       Hobart Football Team