For non British people "Lord" mayor is not a lord, a laird of the manor is not a lord, lord high commissioners are not lords, the lord privy seal is neither a lord nor a privy, nor a seal.

Dean Rusk was not a Dean. But his predecessor was a dean: He got a gig somewhere like Princeton. Thats Dean Acheson. Maybe he was Dean Dean Acheson. They were both previously secretaries of state in the white house: not a secretary you understand..