Ruggles of Red Gap (1935)

In this comedy of an Englishman stranded in a sea of barbaric Americans, Marmaduke Ruggles - a gentleman's gentleman and butler to an Earl - is lost in a poker game to an uncouth American cattle baron. Ruggles' life is turned upside down as he's taken to the USA, is gradually assimilated into American life, accidentally becomes a local celebrity, and falls in love along the way.