Having been created Duke of Gloucester in 1461, Richard remained loyal to his brother Edward IV during the Wars of the Roses, fighting by his side at the battles of Barnet and Tewkesbury.
The Three Richards, by Nigel Saul, at Amazon UK and Amazon USA
The Richard III Society
The Richard III Foundation
Wars of the Roses - principal battles of
The Richard III Society
Richard III Society--Online Bookshelf
Richard III Museum, York
Research puts key British battle over the county line - 22/08/02 Richard III may have lost his crown to Henry Tudor near Atherstone, Warwickshire
Prince in the Tower 'died a bricklayer' - 25/05/07