Definition of "originalist"
One who has, or tends to have, original ideas.
Quotations
It seems to us, however, according to the rate at which novels have lately been published, that unless some great reformer or originalist shall, establish a new school, or unless some new principle of concoction be employed, by which the appetite for fresh stimulants may be satisfied, novel readers must soon become insensible to the charms of fiction, […]
1836, The Monthly Review, January to April inclusive, volume 1, page 182