Who was the brother of XXX?
Virarajendra Chola
Virarajendra Chola (1063--1070 CE) was one of the most underrated Chola kings, mainly because a major part of his life was spent as a subordinate of his two elder brothers Rajadhiraja Chola I and Rajendra Chola II, who along with Virarajendra Chola himself were the illustrious sons of their Chakravarti(Emperor) father, Rajendra Chola I. While certainly it was not a practice among the Chola kings to nominate the eldest son, but the most capable (in administration of their domains as well as proving their mettle on the battlefield) as the heir to the throne.
Rajadhiraja Chola Rajendra Chola II