The Collaborative International Dictionary of English v.0.48:
Marquess \Mar"quess\, n. [Cf. Sp. marques. See Marquis.] A marquis. [1913 Webster] Lady marquess, a marchioness. [Obs.] --Shak. [1913 Webster] marqueterieWordNet (r) 3.0 (2006):
marquess n 1: nobleman (in various countries) ranking above a count [syn: marquis, marquess] 2: a British peer ranking below a duke and above an earl