In the aristocratic pecking order, he's directly below a prince
..... 
unlike the British Baron, he is not a "Peer of the Realm" (member of the high 
aristocracy)... [DOC] [TLE] What is the difference between a duke, an earl, a lord, a marquis, a ... [PAR] As the comment by Quora User notes, these are titles of nobility that rank 
differently in seniority.