▁Cons uel o ▁V ander b ilt ▁( w ife ▁of ▁the ▁Charles ▁Sp encer - Ch urch ill , ▁ 9 th ▁Duke ▁of ▁Mar l borough ), ▁William ▁K iss am ▁V ander b ilt ▁II ▁( hus band ▁of ▁Virginia ▁Fair ▁V ander b ilt ), ▁and ▁Harold ▁St ir ling ▁V ander b ilt ▁( w ife ▁of ▁Ger tr ude ▁Con away ▁V ander b ilt ). ▁ ▁Her ▁pat ernal ▁grand par ents ▁were ▁astronom er ▁Lewis ▁Morris ▁R uther f urd ▁and ▁Margaret ▁Chan ler ▁( née ▁St uy ves ant ) ▁R uther f urd , ▁the ▁nie ce ▁and ▁adopted ▁daughter ▁of ▁Peter ▁Ger ard ▁St uy ves ant . ▁Her ▁pat ernal ▁uncle ▁was ▁Win th rop ▁R uther f urd . ▁ ▁Her ▁mat ernal ▁grand par ents ▁were ▁Oliver ▁Harr iman ▁and ▁Laura ▁( née ▁Low ) ▁Harr iman . ▁ ▁Stage ▁career ▁After ▁her ▁marriage ▁to ▁Sir ▁Paul ▁Henry ▁D uk es , ▁Lady ▁D uk es ▁became ▁involved ▁in ▁the ▁New ▁Th ought ▁Mov ement ▁which ▁was ▁based ▁in ▁New ▁York . ▁ ▁Like ▁her ▁older ▁sister , ▁she ▁was ▁a ▁follow er ▁of ▁O om ▁the ▁Om n ip ot ent . ▁ ▁She ▁appeared ▁on ▁the ▁New ▁York ▁stage ▁profession ally . ▁She ▁was ▁a ▁member ▁of ▁the ▁cast ▁of ▁G av ril ov ' s ▁bal let , ▁Her ▁Majesty ' s ▁Esc ap ade ▁at ▁the ▁Gal lo ▁Theatre , ▁appearing ▁under ▁her ▁ma iden