Hi,
With your names in a1 put this in b1 and drag down as reqired
=MID(A1,FIND(" ",A1)+1,999)&" "&LEFT(A1,FIND(" ",A1)-1)
If the comma is genuine and not a typo you can remove it with this mod
=MID(A1,FIND(" ",A1)+1,999)&" "&LEFT(A1,FIND(" ",A1)-2)
Mike