Rowntree develped a brand named after a play by?
Rowntree's:  Rowntree developed the Kit Kat (introduced in 1935), Aero (introduced in 1935), Fruit Pastilles (introduced in 1881), Smarties (introduced in 1937) brands, and the Rolo and Quality Street brands when it merged with Mackintosh's in 1969. Quality Street (confectionery): Quality Street is a popular selection of individual tinned or boxed toffees, chocolates and sweets, produced by Nestlé. Quality Street (confectionery):  It was named after a play by J. M. Barrie.
J. M. Barrie