During the Civil War of 1642–1646, Derby was garrisoned by Parliamentary troops commanded by Sir John Gell, 1st Baronet, who was appointed Governor of Derby in 1643.
Selama Perang Saudara tahun 1642-1646, Derby diperkuat oleh pasukan Parlementari yang dipimpin oleh Sir John Gell, 1st Baronet, atas perintah Gubernur Derby tahun 1643.