 One of the reasons for the growth of interest in essentialism in the epistemology of modality stems from the criticism or incompleteness of other accounts based on understanding, conceivability, or counterfactual reasoning. An understanding-based theory such as Peacocke’s, for example, naturally integrates an essentialist component by identifying the constitutive principles for modal knowledge with essentialist principles. Likewise, theories of conceivability such as Chalmers’ and Yablo’s, as well as Williamson’s counterfactual theory, have been criticized for failing to take adequate account of the role of essences in the acquisition of modal knowledge (e.g., Roca-Royes 2011a,b; Tahko 2012; Vaidya &amp; Wallner 2021).