Information about the English surnames 'Kisby' and 'Kisbee' can be found at http://www.kisbee.co.uk/name.htm, generally believed to originate from a small village nowadays called Keisby.
The surname Kisby, Kisbye, Kiesby etc. can also be independently found in parts of Denmark and Germany. There exists a small settlement called Kiesby in northern Germany close to the modern Danish border.