Simplify the following text for a Grade 10 native English-speaking person.
Original: Adrian Pierce Rogers ( September 12 , 1931 â `` November 15 , 2005 ) served as a two-term president of the Southern Baptist Convention ( 1979 â `` 1980 and 1986 â `` 1988 ) , a Southern Baptist pastor , and a conservative author .
Simplified: Adrian Pierce Rogers , Th . D. ( September 12 , 1931 â `` November 15 , 2005 ) , was an American pastor , author , and a three-term president of the Southern Baptist Convention ( 1979-1980 and 1986-1988 ) .