What does Ishaan mean?
From Sanskrit ishana (ईशान), 'ruler, master', also a name of the sun and an epithet of Shiva (lord of the northeast direction). Glossed both as 'the sun' and 'lord/ruler'.
What does Pranav mean?
From Sanskrit pranava (प्रणव), the term for the sacred syllable 'Om', regarded as the primordial sound. A spiritually weighted name meaning the mystic syllable itself.