The name Cadell is a boy's name of Welsh origin meaning "battle". Cadell and is often added to lists like Names with Military Meanings and discussed in our forums with posts like "Change two letters (5 names)".
From the experts:
Cadell is a surname that is unlikely to win many supporters, except perhaps from parents looking for an alternative to Caden. But while Cadell is more distinctive, that L ending is weaker and less appealing than Caden's strong N.