This is the second part of a study of Howdenshire, containing a history of the town of Howden and its ancient minster, the least known of the great medieval churches of Yorkshire. The volume also deals with the lordship and civilunit of which the town was the heart, the area called Howdenshire, one of the more complicated regions of England. The book offers a history of the origins and development of the liberty of the bishop of Durham, its ruler until 1836. The liberty of Howdenshire covered all the bishop's possessions in the East Riding, and the book looks at the liberty's scattered exclaves across it, offering a full township and parish study of the most important of them, Welton with Melton, a distant and detached part of Howdenshire until 1894. Finally, the book deals with the two ancient commons associated with Howdenshire. The first is Bishopsoil, a common of 4,000 acres within the bishop's lordship. The volume also contains a study of the administration, drainage and ecology of the great 4,500 acre wetland common of Wallingfen, east of Howdenshire, which from around 1280 until 1781 was governed by the gentry and freeholders of the surrounding parishes, an area of England unique in its history, governance and economy.