Names unknown

This was a K3 class but I don't know the third name in any of the entries. Can you help?

K3 (1970 to date)

20051:54:51 Fergus Cooper, Larry MellonContrast Canoe Club/IRL
20072:04:03 Herman Chalupsky, Steve FroeseSouth African Canoe Federation
20082:07:51 Chris Chorley, Richard Van ZylBath Canoe Club, South African Canoe Federation
20062:12:48 Donnacha Brennan, Michael BrennanThomastown Paddlers/IRL
20042:18:57 Kim De Villiers, Jonathan KelseyUnzimtamhi Canoe Club/SA
20032:28:43 Peter Wise, Genevieve CloeteJohannesburg Canoe Club/SA, East Rand Kayak Club/SA
20092:47:17 David Corcoran, Patricia CorcoranMullingar Canoe Club/IRL