Hidden valley or winding valley
Canden is likely a modern variation of the English surname Camden. It derives from Old English elements meaning a valley that is either enclosed, hidden, or characterized by a winding path.
Less common today
Canden isn't in the latest US Top 1000. It last peaked at #4,875 in 2009.
US births per 5-year period, 1990βpresent (SSA data).