of arms. The motto is now used in a number of other emblems associated with the county. County extent The border with Wales was defined in the first half of the 16th century – the hundreds of Oswestry (including Oswestry) and Pimhill (including Wem), and part of Chirbury had prior to the Laws in Wales Act formed various Lordships in the Welsh Marches. Clun hundred went briefly to Montgomeryshire at its creation in 1536, but was returned to Shropshire in 1546. The present day ceremonial county boundary is almost the same as the historic county's. Notably there has been the removal of several exclaves and enclaves. The largest of the exclaves was Halesowen, which became part of Worcestershire in 1844 (now part of the West Midlands county), and the largest of the enclaves was Herefordshire's Farlow in south Shropshire, also transferred in 1844, to Shropshire. Alterations have been made on Shropshire's border with all neighbouring English counties over the centuries. Gains have been made to the south of Ludlow (the parish of Ludford from Herefordshire), to the north of Shifnal (part of Sheriffhales parish from Staffordshire) and to the north (the hamlet of Tittenley from Cheshire) and south (from Staffordshire) of Market Drayton. The county has lost minor tracts of land in a few places, notably north of Tenbury Wells to Worcestershire, and near Leintwardine to Herefordshire. Romano-British Period Cornovii Tribe The entire area of modern Shropshire was included within the territory of the Celtic Cornovii tribe, whose capital was the Wrekin hill fort. Roman Rule After Roman military expansion into the area in 47 AD, the tribal territory was reorganised as a Roman Civitas and the capital was relocated to Viroconium. Pengwern & Powys Following the collapse of the Romano-British administration, the Cornovii territory may have become part of the Kingdom of Powys, but its status is obscure. Twelfth century Welsh historian Giraldus Cambrensis associated Pengwern with Shrewsbury, but its location is uncertain. Integration with Mercia to 1066 The Saxon Kingdom of Mercia The northern part of Shropshire was part of the territory of the Wreocensæte. The southern part probably belonged to the Magonsaete. Both were absorbed by the Saxon Kingdom of Mercia by King Offa. In 765 he constructed Watt's Dyke to defend his territory against the Welsh, and in 779, having pushed across the River Severn, drove the Welsh King of Powys from Shrewsbury, he secured his