: Pan ▁American ▁Games ▁silver ▁medal ists ▁for ▁Mexico ▁Category : Pan ▁American ▁Games ▁bronze ▁medal ists ▁for ▁Mexico <0x0A> </s> ▁John ▁K err ▁( c . 1 9 2 5 ▁– ▁ 2 5 ▁April ▁ 2 0 0 6 ) ▁was ▁an ▁Irish ▁ball ad ▁singer ▁from ▁C ool back , ▁F an ad , ▁County ▁Don eg al , ▁Ireland . ▁ ▁His ▁best - known ▁recording ▁is ▁Three ▁Le af ed ▁Sh am rock ▁which ▁reached ▁number ▁ 1 ▁in ▁the ▁singles ▁charts ▁of ▁the ▁Republic ▁of ▁Ireland ▁on ▁ 1 ▁April ▁ 1 9 7 2 . ▁ ▁K err ▁came ▁into ▁the ▁business ▁during ▁the ▁show band ▁era ▁as ▁a ▁lead ▁singer ▁with ▁the ▁Classic ▁Show band . ▁In ▁the ▁late ▁ 6 0 ' s ▁his ▁decided ▁to ▁ret ire ▁from ▁the ▁band stand ▁and ▁the ▁recording ▁of ▁Mul roy ▁Bay ▁was ▁intended ▁to ▁be ▁his ▁sw an ▁song , ▁but ▁the ▁song ▁was ▁such ▁a ▁success ▁that ▁it ▁launched ▁K err ▁into ▁a ▁solo ▁career . ▁ ▁His ▁success ▁was ▁followed ▁by ▁a ▁further ▁number ▁ 1 ▁song ▁" Three ▁leaf ▁Sh am rock " ▁John ▁went ▁on ▁to ▁record ▁four teen ▁albums ▁during ▁his ▁career ▁which ▁continued ▁right ▁up ▁to ▁his ▁ 8 0 th ▁year . ▁ ▁K err ▁ran ▁a ▁shop ▁in ▁Br idget own , ▁Ker ry ke el ▁until ▁the ▁turn ▁of ▁the ▁century . ▁He ▁started ▁out ▁as ▁a ▁sh oe ▁repair er ▁and ▁built ▁a ▁small ▁dra per