Cilt-ern

According to the Old English Dictionary:

es;

Cilt-ern

n. [ceald cold, ærn place] The CHILTERN, high hills in Buckinghamshire and Oxfordshire; montes quidam excelsi in agris Bucingamiensi et Oxoniensi :-- Námon hí [Þurkilles here] ǽnne upgang út þuruh Ciltern, and swá to Oxena forda, and ða buruh forbærndon they [Thorkell's army] took an upward course out through Chiltern, and so to Oxford, and burned that town, Chr. 1009; Th. 262, 21, col. 1. cilt-ern,ciltern