Who has a comma for a middle name?
05AB1E, 7 bytes
Code:
',ì#Áðý

Uses the 05AB1E encoding. Try it online!
Explanation:
',ì         # Prepend the input to &quot;,&quot;
   #        # Split on spaces
    Á       # Rotate every element one position to the right (wrapping)
     ðý     # Join the array by spaces