▁Close ▁brother - in - law ▁Alexandre ▁We ill ▁and ▁the ▁young est ▁brothers , ▁S . ▁Syl v ain ▁and ▁David ▁C ahn ▁Laz ard , ▁t utor ed ▁by ▁Simon ▁and ▁El ie , ▁remained ▁in ▁San ▁Francisco ▁as ▁partners ▁and ▁local ▁man agers . ▁Alexandre ▁We ill ▁and ▁brother - in - law ▁David ▁C ahn ▁Laz ard ▁would ▁become ▁leaders ▁of ▁the ▁American ▁offices ▁of ▁Laz ard ▁Fr ères ▁& ▁Co . ▁with ▁the ▁departure ▁of ▁the ▁older ▁Laz ard ▁brothers ▁( the ▁popular ▁S . ▁Syl v ain ▁C ahn ▁Laz ard ▁had ▁died ▁of ▁ty ph oid ▁in ▁San ▁Francisco ▁in ▁July ▁ 1 8 7 1 ). ▁ ▁With ▁the ▁establishment ▁of ▁Laz ard ▁Fr ères ▁import - export ▁offices ▁in ▁New ▁York ▁City ▁and ▁London ▁during ▁the ▁ 1 8 7 0 s , ▁the ▁firm ▁became ▁truly ▁mult in ational . ▁Simon ▁and ▁his ▁brothers ▁held ▁the ▁partner ▁shares ▁of ▁the ▁new ▁offices . ▁ ▁In ▁ 1 8 7 6 , ▁Laz ard ▁Fr ères , ▁after ▁continu ing ▁to ▁move ▁towards ▁the ▁bank ing ▁business , ▁decided ▁to ▁take ▁advantage ▁of ▁the ▁tur mo il , ▁caused ▁by ▁the ▁Pan ic ▁of ▁ 1 8 7 3 ▁and ▁the ▁collapse ▁of ▁several ▁California ▁banks , ▁to ▁focus ▁on ▁bank ing . ▁Simon ▁returned ▁to ▁San ▁Francisco ▁to ▁liquid ate ▁the ▁dry good s ▁business ▁and ▁re open ed ▁Laz ard ▁Fr ères ▁& ▁Co . ▁as ▁bank ers ▁at ▁ 2 0