In the 1760s John Spilsbury invented the jigsaw puzzle.
Hickman was a friend of the vicar of Bromsgrove, John Spilsbury, who was also a fellow of Magdalen; on 12 September 1653 he became the vicar of Brackley, where he had been a lecturer since 1648.
Jigsaw puzzles were originally created by painting a picture on a flat, rectangular piece of wood, and then cutting that picture into small pieces with a John Spilsbury, a London cartographer and engraver, is credited with commercializing jigsaw puzzles around 1760.