Kemo Porter, 19, and Tristan Richards, 22 were found guilty of murdering a mother and her three children in a botched revenge attack.
Six other defendants were found guilty of manslaughter, but cleared of four counts of murder. They are:
- Shaun Carter, 24
- Nathaniel Mullings, 19
- Jackson Powell, 20
- Aaron Webb, 20
- Akeem Jeffers, 21
- Cairo Parker, 17
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Mr Ramaphosa, South Africa's deputy president, is likely to succeed current President Jacob Zuma when his term in office ends in 2019.