By Stephen M. Silverman
Updated October 29, 1997 12:00 AM

Author Dawn Langley Simmons, 77, who was born Gordon Langley Hall (the illegitimate son of a British aristocrat), has died in Charleston, S.C., reports the Associated Press. Simmons, whose 20 books include bios of First Ladies Jacqueline Kennedy and Lady Bird Johnson, reportedly rocked Southern society 30 years ago when he underwent a sex change and married a black man, John Paul Simmons. The cause of death was not reported.