Lý Nhân Tông
Records suggest that there was an attack on the Champa kingdom and its capital, Vijaya, from Vietnam in 1069 (under the reign of Lý Nhân Tông) to punish Champa for armed raiding in Vietnam. The Cham king Rudravarman III was defeated and captured and offered Champa's three northern provinces to Vietnam (present-day Quảng Bình and Quảng Trị provinces).