Survey of English Place-Names

Historical Forms

• Castelcairoc c.1165 Weth 1530 FF

• Castello Kairuc c.1215 CWxvii

• Castelcarroc 1212 Cur 1221 Pat

• Castelkarrok' 1255 Cl

• Castelkarroc 1319 Carliol

• Castel Carok 1357 FF

• Castlecareck 1603 Gilsland

• Kastelkayrok 1459 Fine

Etymology

This is a British place-name from castel (a borrowing from Latin castellum ) and a word corresponding to Welsh  caerog , 'fortified,' from caer , 'fort, camp,' as suggested by Bradley (EHR xxx, 743). v. DEPN.The original castle may be represented by the remains of ancient stone-work on the summit of Carrock Fell.