vAdhi kEsari azhagiya manavALa jIyar is a great scholar and is the dear sishya of periyavAchAn piLLai.  maNavALa mAmunigaL greatly glorifies his intellect and his excellent vyAkyAnam for thiruvAimozhi. Please read this recent article which gives a glimpse of vAdhi kEsari azhagiya manavALa jIyar's glories at http://guruparamparai.wordpress.com/2013/03/22/vadhi-kesari-azhagiya-manavala-jiyar/.