Yamaguchi

Origin: Japanese Yamaguchi is a Japanese surname meaning "mountain entrance" or "mountain gateway" (山口).  

Montgomery

  Origin: Germanic Montgomery is an English surname derived from a place in Normandy, France, meaning "Gumarich's mountain", Gumarich being a Germanic given name meaning "man ruler" or "ruler of man" from Germanic elements guma (man) and ric (power, ruler). Variants: De Montgomery Montgomerie