A fifth interpretation of Derlethianism, not often included when possible directions for the House were debated, was that of "Ursula," the nom de plume of a Derlethian whose true identity is unknown. "Ursula," whose first treatise was published in 418, claims that by virtue of their superior mental flexibility, their open-mindedness, and their native magical talent, only women are truly capable of grasping the fundamentals of all of the Order's magical traditions. Men, Ursula insists, are by nature single-minded and directed; they are capable of great depths of knowledge but of very little breadth. Women, on the other hand, are granted with the inborn capacity for a wider range of talents than their male counterparts: this, she claims, is the reason that in the world outside of the Order, female magical practitioners far outnumber the male, and is also the reason why no man has ever succeeded in coming close to matching Elizabeth of Po's feat.
Ursula's treatises continue to emerge at regular intervals from some undisclosed place in the Order. Whoever she might be, she is highly skilled at preventing the Order from discovering her true identity. Most often suspected of being "Ursula" is the ex-Touccian Derlethian Arxarva, of Covenant Fumus et Specula, who refuses either to confirm or deny the rumor.
Whether Ursula really believes her female supremacist rhetoric or is merely trying to have some fun with the male-dominated Order is similarly unclear; some have insisted that Ursula is actually a male traditionalist with a point to prove about the aggressive women of House Derleth. Nonetheless, Ursula has attracted a small but devoted following of magae who have taken to calling themselves "Ursulans" and enjoy affecting a complete and literal belief in the anonymous writer's theories. Mavis Loriata herself founded a Society of Ursulans in 421, an organization in which Arxarva claims membership.
