Meaning as a surname: From Cada's fortress. Cada probably meant lump as in fat person.
Found on http://www.encyclo.co.uk/local/20139
Cadbury is a British multinational confectionery company owned by Mondelēz International. It is the second largest confectionery brand in the world after Wrigley`s. Cadbury is headquartered in Uxbridge, London, and operates in more than fifty countries worldwide. Cadbury is best known for its confectionery products including the Dairy Milk choco....Found on http://en.wikipedia.org/wiki/Cadbury
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