lone (adj.)youdaoicibaDictYouDict[lone 词源字典]
late 14c., "having no companion, solitary," shortening of alone (q.v.) by weakening of stress or else by misdivision of what is properly all one. The Lone Star in reference to "Texas" is first recorded 1843, from its flag. Lone wolf in the figurative sense is 1909, American English.[lone etymology, lone origin, 英语词源]