Gao Yu
He was said to be instrumental in the consolidation of power that allowed Chu's first ruler , Ma Yin , to found the Chu state , but was later , in Ma Yin's old age , hated by Ma Yin's son ( and eventual successor ) Ma Xisheng , who ordered him executed in 929 without prior approval from Ma Yin . 
<triplet> Ma Xisheng <subj> Ma Yin <obj> father