▁medium ▁some ▁of ▁these ▁could ▁be ▁played ▁equally ▁by ▁a ▁small ▁string ▁or chestra . ▁Charles ▁Wes ley ▁( 1 7 0 7 – 1 7 8 8 ): ▁ 6 ▁Quart ett os , ▁published ▁in ▁ 1 7 7 9 . ▁Franz ▁X aver ▁Rich ter ▁( 1 7 0 9 – 1 7 8 9 ): ▁W rote ▁seven ▁string ▁quart ets , ▁Op . ▁ 5 ▁( 1 7 5 7 ). ▁ ▁Born ▁in ▁the ▁ 1 7 2 0 s ▁Carl ▁Friedrich ▁Ab el ▁( 1 7 2 3 – 1 7 8 7 ): ▁published ▁in ▁groups ▁of ▁six : ▁op . ▁ 8 ▁( 1 7 6 9 ); ▁op . ▁ 1 2 ▁( 1 7 7 5 ), ▁op . ▁ 1 5 ▁( 1 7 8 9 ). ▁Flor ian ▁Leopold ▁G ass mann ▁( 1 7 2 9 – 1 7 7 4 ): ▁He ▁is ▁thought ▁to ▁have ▁composed ▁ 3 7 ▁string ▁quart ets , ▁including ▁six ▁quart etti ▁published ▁c . ▁ 1 7 6 8 ▁as ▁Op . ▁ 1 ▁( H 4 3 1 – 6 ); ▁a ▁set ▁published ▁as ▁Op . ▁ 2 ▁( H 4 4 1 – 2 , ▁ 4 3 5 , ▁ 4 4 4 – 6 ); ▁and ▁a ▁further ▁six ▁published ▁post hum ously ▁in ▁ 1 8 0 4 ▁( H 4 5 1 – 6 ). ▁ ▁Born ▁in ▁the ▁ 1 7 3 0