Holly Ellis Chambers

I am an art historian researching the life story of the forgotten artist, ELLIS HOLLIE CHAMBERS, about whose life story very little is known. I believe he was born in 1921 and died around 1961. Can you please tell me if he was a family relative of Holly Ellis Chambers? My current theory is that ELLIS HOLLIE CHAMBERS was the son of Hol Green Chambers (1891-1968), who was the twin brother of Vol Ellis Chambers (1891-1978), in which case he would have been the cousin of Holly Ellis Chambers...