Survey of English Place-Names

Historical Forms

• Cadibroc, Cadybroc, Cadybrok(e) Hy2 Madox 1221,1248 Ass 1291 Heref 1540 MinAcct

• Cadybrooke 1639 Inq

• Over Cadybrooke 1542 LP

• Cadebroc, Cadebrok(e) c.1250 BrDoc 1287 Ass 1291 Tax 1594 FF

• Caddebroke 1555 ib

• Caddibrok 1579 ib

• Cottibrook 1777 M

Etymology

Cattybrook Fm, Cadibroc , Cadybroc , Cadybrok (e )Hy 2 Madox, 1221, 1248Ass , 1291 Herefet freq to 1540MinAcct , Cadybrooke 1639 Inq, Over Cadybrooke 1542 LP, Cadebroc , Cadebrok (e )c. 1250 BrDoc 173, 1287Ass (p), 1291 Tax, 1594 FF, Caddebroke 1555 ib, Caddibrok 1579 ib, Cottibrook 1777 M.The first el. is uncertain, but it might be the OE  pers.n. Cada , which is thought to be of Celtic origin, cf. Cadbury , Caddington (Bd 56, 145); it occurs in Cadden hill (122infra ) and is common in Devon (D 682). Medial -i - is also difficult, but it sometimes represents OE  -an , esp. in SW p.ns. (cf. Phonol. § 48, Crawf 51 ff, Karlström 16), so that in view of other spellings like Cad (d )e - we may take this name to be 'Cada's brook', v. brōc .