Earlier (1610s) as a kind of pear deemed especially luscious; in this sense the word is ultimately a Romanic folk-etymologization of Turkish beg-armudi "prince's pear" or "prince of pears," influenced in form by the place-name (probably not directly from the town name, because it is on the opposite end of the peninsula from where the pear grows). Also used of garden plants of the mint order with a smell like that of oil of bergamot (1843).
Old English eorl "brave man, warrior, leader, chief" (contrasted with ceorl "churl"), from Proto-Germanic *erlaz, which is of uncertain origin. In Anglo-Saxon poetry, "a warrior, a brave man;" in later Old English, "nobleman," especially a Danish under-king (equivalent of cognate Old Norse jarl), then one of the viceroys under the Danish dynasty in England. After 1066 adopted as the equivalent of Latin comes (see count (n.1)).
Earl Gray tea (1880s) was originally a Chinese tea blended with bergamot oil, supposedly from a recipe given to Charles, second Earl Gray (the Whig prime minister), in the 1830s, but perhaps it was named later, commercially, in his honor.