English Place-name Society

Survey of English Place-Names

A county-by-county guide to the linguistic origins of England’s place-names – a project of the English Place-Name Society, founded 1923.

Castor

Major Settlement in the Parish of Castor

Historical Forms

  • (to) Kyneburga cæstre, (be) Cyneburge cæstre 948 BCS871 c.1200
  • Castre 1086 DB 1428 FA
  • Castre near Peterborough 1325 Cl
  • Castra 1174 P
  • Caster al. Castre 1456 Pat
  • Castor 1189(1332),1227 Ch 1316 Cl
  • Cestre 1327 Ipm

Etymology

v. ceaster . The Roman camp here is the station of Durobrivae on Ermine St, a compound of British duro -, 'fortress,' and briva , 'bridge,' cf. Durobrivae as the old name for Rochester.The church is dedicated to St Kyneburga , daughter of Penda, king of Mercia, who according to tradition founded a monastery here in the 7th cent. Her name is preserved in a ridge locally known as Lady Conyburrow's Way (Bridges ii, 499). According to Henry of Huntingdon (c. 1115), the place was at one time called Kair Dorm , id est Dormeceastre , while two centuries later John of Tynemouth in his Historia Aurea tells us that the place was called Dormundescastre and afterwards named Kineburga castrum . It would seem therefore that the site of Castor was at one time in the possession of an Englishman named Dēormund . Dormeceastre is a reduction of the earlier name, while Kair Dorm is a pseudo-British form. Cf. VCH ii, 472.