John Zápolya named Martinuzzi and Péter Petrovics guardians of his infant son John II Sigismund , who was elected King of Hungary by the Diet ( with Martinuzzi as regent ) .
Head entity: john zápolya Q32607 0 1
Tail entity: john ii sigismund Q313396 12 13 14
Relation (head \u2192 tail): P22
Inverse relation (tail \u2192 head): P40