I have read sometime ago on the Oyate boards that the sons of Bone Necklace, one of the leading Yanktonai chiefs of his time, were Wizi, White Ghost, D.K. Howe, Mark Dog Back and possibly Thomas Fast Walker, but I can´t give a reliable source.
Robert Galler wrote in his article about Yanktonai history that Wizi and White Ghost were cousins.
I see where his wife is widow in 1911 in the Yanton census 1911 The only thing i have is where they claim that Sungil was the nephew of Wizi and White Ghost who married Sitting Bull's daughter. refering to both of them as brothers