Rajasekhara (c. 10th century CE) was a prominent Sanskrit poet, dramatist, and scholar who served in the court of the Gurjara-Pratiharas. 'Karpurmanjari' is indeed one of his most famous works - it's a prakrit drama in four acts. The other works listed belong to different authors: Setubandha is attributed to Pravarasena II, Gaudavadha to Vakpati, and Saptasataka to Hala (Prakrit anthology). Rajasekhara also wrote works like 'Kavyamimamsa', 'Balaramayana', 'Balabharata', and 'Viddhasalabhanjika'.