Duke

Gen 36:15  These were dukes of the sons of Esau: the sons of Eliphaz the firstborn son of Esau; duke Teman, duke Omar, duke Zepho, duke Kenaz, 
Gen 36:16  Duke Korah, duke Gatam, and duke Amalek: these are the dukes that came of Eliphaz in the land of Edom; 

Realizing that the KJV Bible may have words that are not always understood, I wanted to look elsewhere for the word duke. One place to start my search for understanding is an online dictionary. 

Websters: defines Duke as a man of very high rank; the ruler of an independent area of land... 

The Strongs Concordance

441 'alluwph al-loof' or (shortened) talluph {al-loof'}; from 502; familiar; a friend, also gentle; hence, a bullock (as being tame; applied, although masculine, to a cow); and so, a chieftain (as notable, like neat cattle):--captain, duke, (chief) friend, governor, guide, ox.

This was translated in the KJV  as: duke 57X, chief  4X, friends 2X, governors 2X, captains 1X, governor 1X and ox 2X.

Various Bibles translated Duke as chief, chieftains, leader, clan, tribal chief. Have you an idea of what a duke is now? Can you see why people may see things a little differently? A duke may bring to mind nobility or John Wayne, also I have seen leaders who were stubborn as an ox. An ox is a servant to his master. A leader must serve his people. Never does an ox own the land he plows. A word can be misapplied. This happens often when witnessing where there is opposition. We must look at the context of the word in the Bible. A concordance or dictionary may have several meanings and maybe only one meaning applies. Were the dukes of the sons of Esau oxen? No, they were tribal leaders.