Others 45-46 to 68-69 with not the most obvious nicknames
Cussons - Laurence "Lol"
Griffiths - Mervyn "Sandy"
Kerkhof - Martinus "Mike"
Lyden - Dennis "Denny" & "Danny"
Murdoch - Alexander "Alex" & "Alec"
Nattrass - Henderson "Harry"
Porter - Cyril "Lofty"
Rogers - William "Ginger" (of that era!)
Smith - Robert "Bob" & "Reg"
Wiltshire - John "Jim"(the nearest similarity to Powell's)