Gregory Alan Williams: Gregory Alan Williams. Actor: Old School. Thirty-plus years in, Gregory Alan Williams continues to appear regularly in film and on television. He has also been producing, writing and, directing for the past several years. Born and raised in Des Moines, Iowa, GregAlan served as a Combat Engineer and Journalist in the United States Marine Corps. His professional career began in 1978 as a member of the renown Penumbra Theater Company...