Sisowath Monivong
Monivong was the grandson of the poet-king Ang Duong , grandfather of Norodom Sihanouk and the great-grandfather of the current king , Norodom Sihamoni . 
<triplet> Norodom Sihanouk <subj> Norodom Sihamoni <obj> child <triplet> Norodom Sihamoni <subj> Norodom Sihanouk <obj> father