A Dictionary of the Booksellers and Printers who Were at Work in England, Scotland and Ireland from 1641 to 1667/Rishton (R.)
RISHTON (R.), bookseller (?) in London, 1648. Hazlitt, ii. 103, gives the imprint to a political pamphlet as Printed for R. Rishton, 1648. This may be a misreading for Royston.