​From Wikipedia, the free encyclopedia. Gregory Anthony Isaacs  (15 July 1951 – 25 October 2010) was a Jamaican reggae musician. Milo Miles, writing in the New York Times, described Isaacs as "the most exquisite vocalist in reggae". His nicknames include Cool Ruler and Lonely Lover. Description above from the Wikipedia article Gregory Isaacs, licensed under CC-BY-SA, full list of contributors on Wikipedia