▁three ▁brothers , ▁Jack , ▁W ool f ▁and ▁Sol omon , ▁who ▁made ▁a ▁fortune ▁in ▁diam ond ▁and ▁gold ▁min ing ▁in ▁South ▁Africa . ▁Their ▁father ▁was ▁Jo el ▁Jo el ▁( 1 8 3 6 – 1 8 9 3 ) ▁and ▁their ▁mother ▁Catherine ▁" K ate " ▁Jo el ▁n ée ▁Isa acs ▁( 1 8 4 0 – 1 9 1 7 ), ▁a ▁sister ▁of ▁Bar nett ▁Isa acs , ▁later ▁known ▁as ▁Bar ney ▁Bar n ato . ▁ ▁As ▁well ▁as ▁being ▁prominent ▁Rand l ords , ▁several ▁of ▁the ▁Jo el ▁family ▁became ▁widely ▁known ▁in ▁thorough bre d ▁horse ▁racing ▁as ▁owner / bre ed ers ▁of ▁numerous ▁w inners ▁of ▁British ▁Classic ▁R aces . ▁ ▁The ▁Jo el ▁brothers ▁ ▁Jack ▁Bar n ato ▁Jo el ▁( 1 8 6 2 – 1 9 4 0 ), ▁min ing ▁magn ate , ▁Chair man ▁of ▁Johannes burg ▁Cons olid ated ▁In vest ment ▁Company ▁Ltd ▁( from ▁ 1 9 3 1 ), ▁Thor ough bre d ▁race hor se ▁owner / bre eder ▁married ▁to ▁O live ▁C oul son ▁S op with ▁( d . ▁ 1 9 3 7 ), ▁daughter ▁of ▁Thomas ▁S op with . ▁ ▁W ool f ▁Bar n ato ▁Jo el ▁( 1 8 6 3 – 1 8 9 8 ), ▁South ▁African ▁min ing ▁magn ate ▁ ▁Sol omon ▁Bar n ato ▁Jo el ▁( 1 8 6 5