Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 142,957 pages of information and 228,875 images on early companies, their products and the people who designed and built them.

Royal Defiance

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Royal Defiance were motorcycles produced from 1901 to 1904 by a family called Williams, at works established in 1880 in the Clanamman Valley, southwest Wales.

The first motorcycle was produced in 1901, and had a Belgian FN engine installed in a cycle frame with braced forks.

Following on came machines with 2hp, 2.25hp or 3.5hp Minerva engines. Because the works were so far away from a recognised industrial centre, the motorcycles would have been very primitive in design and construction.


Sources of Information

The British Motorcycle Directory - Over 1,100 Marques from 1888 - by Roy Bacon and Ken Hallworth. Pub: The Crowood Press 2004 ISBN 1 86126 674 X