Loidis, from which Leeds, Yorkshire derives its name, was anciently a forested area of the Celtic kingdom of Elmet. The settlement certainly existed at the time of the Norman conquest of England and in 1086 was a thriving manor under the overlordship of Ilbert de Lacy. It gained its first charter from Maurice de Gant in 1207 yet only grew slowly throughout the medieval and Tudor periods. The town had become part of the Duchy of Lancaster and reverted to the crown in the medieval period, so was a Royalist stronghold at the start of the English Civil War.
In the seventeenth and eighteenth centuries Leeds prospered and expanded as a centre of the woollen industry and it continued to expand rapidly in the Industrial Revolution. Following a period of post industrial decline in the mid twentieth century Leeds' prosperity revived with the development of tertiary industrial sectors.