Editing Earl of Derby (section)

== Creation of Edward III ==
The large estates which were taken from Robert in 1266 were given by [[Henry III of England|Henry III]] to his son, [[Edmund Crouchback]]; and his son, [[Thomas, Earl of Lancaster]], also called himself Earl Ferrers. In 1337 Edmund's grandson, [[Henry of Grosmont]] ({{Circa|1310}} – 1361), afterwards [[Duke of Lancaster]], was created Earl of Derby, and this title was taken by Edward III's son, [[John of Gaunt]], who had married Henry's daughter, Blanche. John of Gaunt's son and successor was [[Henry IV of England|Henry Bolingbroke]], who acceded to the throne as [[Henry IV of England|Henry IV]] in 1399. The title Earl of Derby then [[merged in the Crown]].