In response to scholarship which has shown that seventeenth-century Scottish scholasticism was influenced by John Duns Scotus (1265/66–1308), Jean-Pascal Anfray has argued that Scottish scholasticism was only indirectly influenced by Scotism, especially by Jesuit thinkers like Francisco Suárez (1548–1618), using the Aberdeen Doctor James Sibbald (1595–1647) and his theory of the body-soul composite as a litmus test. In reply to Anfray’s claims, this article undertakes three interconnected tasks. First, it renews calls for philosophical Scotism to be defined according to a (...) principles-based approach focusing on Scotus’s metaphysics of essence in contrast to a quasi-falsificationist approach. Second, it shows how Sibbald adopts the Scotist metaphysics of essence over the very different Suárezian metaphysics of essence. Third, it demonstrates how Sibbald endorses Scotus’s qualified pluralism in accounting for the body-soul composite. Sibbald thus turns out to be more directly Scotist (and less Suárezian) than first thought. (shrink)