Lewis,1688–1744, English author.
Also The·o·bold [thee-uh-bohld] /ˈθi əˌboʊld/. a male given name.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
masc. proper name, from Medieval Latin Theobaldus, from Old High German Theudobald, from theuda "folk, people" + bald "bold." Form influenced in Medieval Latin by the many Greek-derived names beginning in Theo-.
Online Etymology Dictionary, © 2010 Douglas Harper