Earl Cadogan is a title that has been created twice in the Peerage of Great Britain for the Cadogan family. The second creation, in 1800, was for Charles Cadogan, 3rd Baron Cadogan.
William Cadogan, 1st Earl Cadogan
Garter stall plate of the 5th Earl Cadogan (1840-1915), in St George's Chapel, Windsor Castle. Arms: Quarterly 1 & 2: Gules, a lion rampant reguardant or (Cadogan); 2 & 3: Argent, three boar's heads couped sable. Crest: Out of a ducal coronet or a dragon's head vert The sinister supporter wears the Cross of the Austrian Military Order of Maria Theresa, commemorating the naval services of the 3rd Earl