▁( source : ▁Gro ve ). ▁Franz ▁K rom mer ▁/ ▁Fr anti š ek ▁K ram ář ▁( 1 7 5 9 – 1 8 3 1 ): ▁Appro xim ately ▁ 1 0 0 ▁string ▁quart ets , ▁many ▁of ▁which ▁were ▁very ▁popular ▁in ▁early ▁ 1 9 th ▁century ▁Vienna , ▁and ▁were ▁compared ▁posit ively ▁to ▁Be eth oven ' s ▁quart ets . ▁ ▁Born ▁in ▁the ▁ 1 7 6 0 s ▁Luigi ▁Cher ub ini ▁( 1 7 6 0 – 1 8 4 2 ): ▁Six ▁string ▁quart ets ▁( 1 8 1 4 – 1 8 3 7 ). ▁Jan ▁Lad is lav ▁D us se k ▁( 1 7 6 0 – 1 8 1 2 ): ▁Pub lished ▁three ▁string ▁quart ets , ▁Op . ▁ 6 0 . ▁Anton ín ▁V ran ický ▁/ ▁Anton ▁W ran itz ky ▁( 1 7 6 1 – 1 8 2 0 ): ▁Th irty ▁quart ets . ▁A ▁founder ▁of ▁the ▁Vienna ▁" vi olin ▁school " ▁and ▁major ▁virt u oso , ▁he ▁was ▁the ▁teacher ▁of ▁Ign az ▁Sch upp anz igh ▁and ▁leader ▁of ▁the ▁Lob kow itz ▁or chestra . ▁Ad al bert ▁Gy row etz ▁/ ▁V oj t ě ch ▁Mat y áš ▁J í ro vec ▁( 1 7 6 3 – 1 8 5 0 ): ▁Friend ▁of ▁Moz art , ▁wrote ▁at ▁least ▁forty - two ▁string ▁quart ets ▁( G ro ve