at Lichfield. Evidence suggests that the Lichfield Gospels were made in Lichfield around 730. As in other Anglo-Saxon kingdoms, the many small monasteries established by the Mercian kings allowed the political/military and ecclesiastical leadership to consolidate their unity through bonds of kinship. Subdivisions of Mercia For knowledge of the internal composition of the Kingdom of Mercia, we must rely on a document of uncertain age (possibly late 7th century), known as the Tribal Hidage – an assessment of the extent (but not the location) of land owned (reckoned in hides), and therefore the military obligations and perhaps taxes due, by each of the Mercian tribes and subject kingdoms by name. This hidage exists in several manuscript versions, some as late as the 14th century. It lists a number of peoples, such as the Hwicce, who have now vanished, except for reminders in various placenames. The major subdivisions of Mercia were as follows: South Mercians The Mercians dwelling south of the River Trent. Folk groups within included the Tomsæte around Tamworth and the Pencersæte around Penkridge (roughly corresponding to southern Staffordshire and northern Warwickshire). North Mercians The Mercians dwelling north of the River Trent (roughly corresponding to eastern Staffordshire, Derbyshire and Nottinghamshire). Outer Mercia An early phase of Mercian expansion, possibly 6th century (roughly corresponding to southern Lincolnshire, Leicestershire, Rutland, Northamptonshire and Oxfordshire). Lindsey Once a kingdom in its own right, disputed with Northumbria in the 7th century before finally coming under Mercian control (roughly corresponding to the historic riding of Lindsey in Lincolnshire). Middle Angles A collection of many smaller folk groups under Mercian control from the 7th century, including the Spaldingas around Spalding, the Bilmingas and Wideringas near Stamford, the North Gyrwe and South Gyrwe near Peterborough, the West Wixna, East Wixna, West Wille and East Wille near Ely, the Sweordora, Hurstingas and Gifle near Bedford, the Hicce around Hitchin, the Cilternsæte in the Chilterns and the Feppingas near Thame (roughly corresponding to Cambridgeshire, Bedfordshire, Hertfordshire, Buckinghamshire and southern Oxfordshire). Hwicce Once a kingdom in its own right, disputed with Wessex in the 7th century before finally coming under Mercian control. Smaller folk groups within included the Stoppingas around Warwick and the Arosæte near Droitwich (roughly corresponding to Gloucestershire, Worcestershire and southern Warwickshire). Magonsæte A people of the Welsh border, also known as the Westerna, under Mercian control from the 7th century. Smaller folk groups within included the Temersæte