With reference to Indian history, consider the following pairs:

Historical person	Known as
1. Aryadeva	Jaina scholar
2. Dignaga	Buddhist scholar
3. Nathamuni	Vaishnava scholar

How many pairs given above are correctly matched ?

The correct option is Only two pairs.

Let us examine each pair individually to determine if they are correctly matched:
1. Aryadeva (Incorrectly matched): Aryadeva (circa 3rd century CE) was a renowned Mahayana Buddhist scholar and philosopher. He was a principal disciple of Nagarjuna and made significant contributions to the Madhyamaka (Middle Way) school of Buddhist philosophy. He is not a Jaina scholar.
2. Dignaga (Correctly matched): Dignaga (circa 5th–6th century CE) was a highly influential Buddhist scholar and logician. He is widely regarded as one of the founding fathers of Buddhist logic and epistemology (Pramanavada). Thus, this pair is correctly matched.
3. Nathamuni (Correctly matched): Sri Ranganathamuni, popularly known as Nathamuni (circa 9th–10th century CE), was a famous Vaishnava scholar and theologian. He is celebrated for collecting and codifying the Nalayira Divya Prabandham, the compilation of hymns composed by the Alvar saints. Thus, this pair is correctly matched.

Since only Pair 2 and Pair 3 are correctly matched, a total of two pairs are correct.