thapap Ji There was king name rand b shah who had son from his married wife name Radotha. He was older son of king. This king falls in love with widow Bahuni women. Before marrying her she made her promise to her that he would name her son crown prince Although according to so call king law the oldest son of the chetriya son could be crown prince. But this king declared his new born crown prince; His name was surendra bir birkam shah. How ever this king dad dun make his oldest son crown prince . King Birendra has older bro name Rabindra who mom was guruni;