Complex sentence: She was married to playwright Ronald Sossi from 1967 to 1970; and to film producer Marvin Minoff for 29 years, from 1980 until his death on November 11,2009.
Split into simpler sentences: She was married to playwright Ronald Sossi from 1967 to 1970; and to film producer Marvin Minoff from 1980 until his death in November 2009. Franklin and Minoff remained together for 29 years, until Minoff's death on November 11,2009.