 Long John Silver was quartermaster under a fictional 18th-century pirate captain created by what writer?
Long John Silver: Long John Silver is a cunning and opportunistic pirate who was quartermaster under the notorious Captain Flint. Captain Flint: Captain J. Flint is a fictional 18th-century pirate captain who features in a number of novels, television series, and films. Captain Flint:  The original character was created by the Scottish writer Robert Louis Stevenson (1850-1894).
Robert Louis Stevenson