A "subjective [(as distinguished from objective)] right [i]s the power of an individual to perform a lawful action, or in other words, . . . a 'lawful' or 'licit' power."
Joan Lockwood O'Donovan on William of Ockham and Marsiglio of Padua, in "The challenge and the promise of proto-modern Christian political thought," in Oliver O'Donovan and Joan Lockwood O'Donovan, Bonds of imperfection: Christian politics, past and present (Grand Rapids, MI: William B. Eerdmans Publishing Company, 2004), 148 (137-166). Also Jean Gerson: an "individual right [i]s a 'proximate faculty (facultas) or power' conforming to the dictate of 'right reason' or 'primary justice'" (150).