JARL

also, for noun YARL
for verb, IARLE

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ETYMOLOGY
noun: Old Norse (= Old English eorl earl), originally ‘a man of noble birth’; hence used as the title of hereditary Norse and Danish chieftains; 
later, of the royal liegemen next in rank to the king whom they followed

verb: apparently a derivative of jar (vb.)

EXAMPLE
From: Letters and Memorials of State
By Sir Henry Sidney, Sir Philip Sidney, Robert Sidney, Robert Sidney Leicester (Earl of), Philip Sidney Leicester (Earl of), Algernon Sidney
Edited By Arthur Collins, Vol. I, 1746