Sorry, couldn't find any words matching keion.
You can also try a search for けいおん.
Names — 3 found
ぬなみけいおん
【沼波瓊音】
1. Nunami Keion
けいおん
【瓊音】
1. Keion
けいおんじ
【慶恩寺】
1. Keionji