▁Commons ▁and ▁later ▁held ▁office ▁as ▁a ▁Lord - in - wait ing ▁( g overn ment ▁wh ip ▁in ▁the ▁House ▁of ▁L ords ) ▁in ▁the ▁Liberal ▁administr ations ▁of ▁Lord ▁John ▁Russell , ▁Lord ▁Pal mer ston ▁and ▁William ▁E wart ▁Glad stone ▁as ▁well ▁as ▁in ▁the ▁coal ition ▁government ▁of ▁Lord ▁Aber de en . ▁He ▁was ▁succeeded ▁by ▁his ▁grand son , ▁Francis ▁St on or , ▁ 4 th ▁Baron ▁Cam o ys , ▁who ▁served ▁as ▁a ▁Lord - in - wait ing ▁in ▁the ▁Liberal ▁govern ments ▁of ▁William ▁Glad stone ▁and ▁Lord ▁Rose ber y . ▁The ▁title ▁is ▁currently ▁held ▁by ▁his ▁great - grand son , ▁Thomas ▁St on or , ▁ 7 th ▁Baron ▁Cam o ys , ▁who ▁succeeded ▁his ▁father ▁in ▁ 1 9 7 6 . ▁He ▁served ▁as ▁Lord ▁Chamber lain ▁of ▁the ▁House hold ▁between ▁ 1 9 9 8 ▁and ▁ 2 0 0 0 . ▁ ▁The ▁ancest ral ▁seat ▁of ▁the ▁St on or ▁family ▁is ▁St on or ▁Park , ▁Hen ley - on - Th ames , ▁Oxford shire . ▁ ▁Bar ons ▁Cam o ys , ▁First ▁creation ▁( 1 3 1 3 ) ▁Ralph ▁de ▁Cam o ys , ▁ 1 st ▁Baron ▁Cam o ys ▁( d . ▁ 1 3 3 6 ) ▁Thomas ▁de ▁Cam o ys , ▁ 2 nd ▁Baron ▁Cam o ys ▁( d . ▁ 1 3 7 2 ) ▁