Like his namesake, the first King of Tympania, Cyril worked as a blacksmith in Ulderlinden before he was brought to Evasendia in 206. He was apprenticed to Touccio's first filius Sarcon, who taught him the craft of masonry as well as the art of magic. Upon his ascension to magehood in 219, Cyril became the first member of House Touccio to receive a mage name, although some have claimed that Sarcon only followed this practice because he found his student's original Ulderlindener name impossible to pronounce.
Impassive, taciturn and massive, Cyril seems to have been treated as a figure of some fun on the Council. Surviving writings of the pre-diaspora period are filled with joking references to his ox-like physique, his lack of affect, and his frugality, which by all accounts was, even for an Ulderlindener, excessive. The many anecdotes illustrating Cyril's meanness are doubtless exaggerations, but it does seem that his only address to the Council in all his years as mage was an appeal, in 226, for the Order to curtail its profligate spending.
Perhaps because of his size and infrequent speech, the Order did not take Cyril's abilities as a mage terribly seriously until 227. In this year, Cyril produced a working copy of the Chains of Licius from his uncle Licinius' lab notes, a feat which had eluded many others within the Order, including Touccio himself. His reputation thus assured, Cyril took his first apprentice one year later.
From 230 to 231, Cyril surreptitiously supplied Tyrus' faction with enchanted devices equivalent to those his parens Sarcon was providing to Tyrus' rival revolutionary, Gaultere. Whether he did so out of political partisanship or out of some vague desire for equity, however, is unknown: Cyril was never to speak about his political opinions.
In 232, badly injured in the attack on the Touccian laboratories, Cyril was taken alive to Evasendia's new anti-mage leadership and questioned about his Order affiliations, but he was rescued not long thereafter by the students of Clement, who took him into hiding. He was the only Touccian mage to survive the disaster; by the spring of 232, Cyril and four orphaned apprentices were all that was left of House Touccio.
Cyril's stoic refusal to betray the Order while in the hands of its enemies had made him a hero to the Council's magi. At the Cholaeic Diaspora, he was urged to remain in Evasendia to serve as his House's representative on the Council, but he chose instead to travel with the south-bound diaspora party to Rhythnor, taking with him all four of House Touccio's last surviving students, later known as the "Grandsons of Touccio." He founded Covenant Melos later that year.
Cyril was killed in an accident at Covenant Melos in 237, only weeks after declaring the youngest of Touccio's Grandsons, Castor, a mage. Although he left no descendants of his own, he had raised to magehood all four of the Grandsons of Touccio, from whom the entirety of House Touccio descends:
- Balbo (T7a), from 232 to 234
- Scaurus (T7b), from 232 to 234
- Gemel (T9), from 232 to 235
- Castor (T10), from 232 to 237
In later Touccian iconography, Cyril is associated with the North. He is the stable foundation of his House, supporting it from below.
