Ashoka's Delhi-Meerut pillar inscription was first discovered in 1750 by —

The Jesuit traveller Joseph Tieffenthaler recorded the Delhi-Meerut pillar in the eighteenth century. James Prinsep deciphered Brahmi in 1837, while Cunningham later surveyed many sites. Therefore, the remaining options are incorrect because they refer to a different denomination, court, inscription, office, location, ruler, religious tradition, or historical period.