Complex sentence: Subsequently, he entered "gurukulavasam" under Sri Ariyakudi Ramanuja Iyengar in 1942 and remained an ardent disciple of Ramanuja Iyengar until the latter's passing away (in 1967).
Split into simpler sentences: Subsequently, he entered "gurukulavasam" under Sri Ariyakudi Ramanuja Iyengar in 1942. From then on, KVN remained an ardent disciple of Ramanuja Iyengar until the latter's passing away (in 1967).