Ceortes íg

According to the Old English Dictionary:

Certes íg, e;.

Ceortes íg

f. [Hovd. Matt. West. Certesie] Cerot's island, CHERTSEY, in Surrey, on the bank of the Thames; Ceroti insula, Cartesia, in agro Surriensi, ad ripam Tamesis fluminis :-- Ercenwold getimbrede mynster on Súþrigena lande, be Temese streáme, on ðære stówe ðe is nemned Ceortes íge Earconvaldus monasterium construxerat in regione Sudergeona, juxta fluvium Tamensem, in loco gui vocatur Cerotæsei, id est, Ceroti insula, Bd. 4, 6; S. 574, 15. Hér drǽfde Eádgár cyng ða preóstas of Ceortes íge [Certes ige, 223, col. 3] in this year, A. D. 964, king Edgar drove the priests from Chertsey, Chr. 964; Th. 222, 5, 10. ceortes ig