 Sigananda remained an important ally of the king but they fell out after the Battle of Ndondakusuka in 1856, when Sigananda sided with the young prince Cetshwayo against his half-brother (and Mpande's favourite son) Mbuyazi.This battle had been about who was the rightful heir to Mpande's throne on his death.Although it had always been assumed Cetshwayo was the rightful heir, Mpande had apparently grown wary of his elder son's ambitions and had encouraged his favourite, Mbuyazi, to stake a claim.