. ▁Further ▁contract s ▁followed ▁in ▁ 1 7 3 4 ▁and ▁ 1 7 3 5 , ▁the ▁latter ▁making ▁them ▁the ▁largest ▁trad ers ▁of ▁rh ub ar b ▁in ▁Russia . ▁Samuel ▁Hold en ▁de alt ▁with ▁the ▁British ▁arrang ements , ▁receiving ▁up ▁to ▁a ▁half ▁of ▁the ▁contract ▁from ▁Wol ff ▁and ▁Sh iff ner . ▁ ▁The ▁Ts arina ' s ▁death ▁in ▁ 1 7 4 0 ▁ended ▁the ▁prom in ence ▁of ▁the ▁firm ▁and ▁Sh iff ner ▁moved ▁back ▁to ▁London , ▁where ▁he ▁established ▁offices ▁on ▁Broad ▁Street ▁and ▁later ▁in ▁B ish ops gate ▁Without . ▁He ▁died ▁in ▁December ▁ 1 7 5 6 ▁and ▁his ▁will , ▁which ▁provided ▁for ▁his ▁children ▁and ▁wid ow , ▁was ▁proved ▁in ▁the ▁Pr er og ative ▁Court ▁of ▁Can ter bury . ▁The ▁family ▁business ▁was ▁taken ▁over ▁by ▁his ▁sons , ▁Henry ▁and ▁John , ▁who ▁continued ▁to ▁trade ▁with ▁the ▁Balt ic ▁region ; ▁they ▁were ▁declared ▁ins ol vent ▁in ▁ 1 7 6 1 , ▁which ▁Henry ▁is ▁recorded ▁as ▁bl aming ▁on ▁John ' s ▁" fo ol ish ness ". ▁ ▁Family ▁▁ ▁His ▁marriage ▁to ▁Ag n ata ▁produced ▁six ▁children , ▁four ▁sons ▁and ▁two ▁daughters : ▁▁ ▁Henry ▁Sh iff ner ▁( 1 7 2 1 ▁- ▁ 1 7 9 5 ), ▁a ▁merchant ▁who ▁became ▁Member ▁of ▁Parliament ▁for ▁Mine head ▁from ▁ 1 7 6 1 ▁to ▁ 1 7