ically ▁weak en ▁Pop es ▁with ▁whom ▁they ▁were ▁in ▁conflict , ▁so ▁too ▁Pop es ▁sometimes ▁spons ored ▁anti - k ings ▁as ▁political ▁riv als ▁to ▁em per ors ▁with ▁whom ▁they ▁disag re ed . ▁ ▁Several ▁anti - k ings ▁succeeded ▁in ▁v ind ic ating ▁their ▁claims ▁to ▁power , ▁and ▁were ▁recognized ▁as ▁right ful ▁k ings : ▁for ▁example , ▁King ▁Con rad ▁III ▁of ▁Germany , ▁Emperor ▁Frederick ▁II , ▁and ▁Emperor ▁Charles ▁IV ▁( see ▁table ▁below ). ▁The ▁status ▁of ▁others ▁as ▁anti - k ings ▁is ▁still ▁disput ed : ▁e . g . ▁in ▁the ▁case ▁of ▁Duke ▁Henry ▁II ▁of ▁Bav aria ▁and ▁Mar gra ve ▁Eg bert ▁II ▁of ▁Me issen . ▁ ▁List ▁of ▁anti - k ings ▁ ▁Germany ▁ ▁German ▁double ▁elections ▁ ▁Boh emia ▁ ▁Hung ary ▁ ▁Japan ▁ ▁Korea ▁▁ ▁Wang ▁Go ▁ ▁Ye ong j ong ▁of ▁G ory e o ▁ ▁References ▁ ▁S ources ▁▁ ▁Heinrich ▁Mitte is : ▁Die ▁deutsche ▁König sw ahl . ▁I hre ▁Rechts grund lagen ▁bis ▁zur ▁gold enen ▁Bul le , ▁ 2 nd ▁expanded ▁edition , ▁Ro hrer , ▁Br ün n , ▁Mun ich , ▁Vienna , ▁ 1 9 4 4 , ▁pp . ▁ 1 1 3 ▁ff . ▁ ▁Diet mar ▁Will owe it : ▁Deutsche ▁Ver fass ungs geschichte . ▁V om ▁Fran ken reich ▁bis ▁zur ▁Wieder verein igung ▁Deutsch lands , ▁ 5 th ▁re vised