Yaska

male
Ancient Sanskrit grammarian, That, noun, veda, Sanskrit grammarian, Vedanga…Nirukta
Yaska also gives a test for nouns both concrete and abstract: nouns are words which can be indicated by the pronoun "that".

Panini

male
Nighantu, Historical Vedic religion, Vedic religion, IAST, Vedanga, Nirukta
Panini (IAST:, Devanāgarī: ; a patronymic meaning "descendant of Pani") was an ancient Indian grammarian from Gandhara (traditionally 520–460 BC,...