This ancient barony was created simply as Grey by writ, but is referred to as ""Grey of Codnor"" or ""Grey (of Codnor)"" to distinguish it from other Grey baronies, and so as not to be confused with the extant Grey earldom ("of tea fame", a different family); by convention holders of such ancient baronies were styled simply as ""The Right Honourable The Lord Grey"" (but nowadays only as Rt Hon. if also appointed a Privy Counsellor). The style of ""Lord Grey"" had also previously been used a courtesy title by the Earls of Stamford and Warrington.