Pittway Brothers, London silversmiths and retailer of fine quality fitted portmanteaux and toilet cases. Thought to have been established in 1784, and subsequently by John and William Pittway, was acquired in circa 1861 by William Tween and Frederick Purnell, who continued to run the business under its former name. By the late 1860’s Tween had left the business leaving Purnell to continue alone.v