Pair 1: Aryadeva was a prominent Buddhist philosopher and a disciple of Nagarjuna. He was not a Jaina scholar. Pair 2: Dignaga was a celebrated Buddhist logician and philosopher. This pair is correctly matched. Pair 3: Nathamuni was a revered Vaishnava theologian and one of the earliest Acharyas of the Sri Vaishnavism tradition. This pair is correctly matched.