Early life
Second child of Quintus Atresius and Aurelia Vera, Decanian was born in the eastern bank of Alliria. His father is a retired doctor and researcher and his mother a noblewoman of ancient lineage, tied with House Pirian of Vel Anir. He had an older sister, Domitia, who apparently joined a dark cult and is now gone, allegedly to Crossroad Mire.
Raised happily in a loving family, Decanian studied at home and, later, in a private school. Since adolescence he showed an aptitude for the arcane arts without equals in his family, not really proficient in magic. He refused to follow his father's professional path and decided to became a scholar.
At the age of 16 he asked to be admitted at the College of Elbion and the following year he left his family to join the academy.
Present
After five years of study and academic achievements, Decanian was appointed College librarian, charged to provide books for the students, protect the properties of the archive and investigate about ancient missing tomes.
In the meanwhile blossomed in him his father's healing vocation. The days in the library were followed by nights in the city's Healing Halls, where he started to learn the basics of care and hone his healing skills.
Never really interested in religion, he had an epiphany at the age of 22 thanks to an old woman that he treated: she gave him a cheap, little pendant of the Trinity of Light and her thankful words warmed so much his heart that he started to investigate the deitiest and the dogmas of the Trinity. He found that the cult's values and teachings matched perfectly his lifestyle and ultimately he became a faithful follower of the cult.

Returning from a research mission on the shores of Crobhear Lake he came across a fierce battle between some knights and one of the groups of brigands that infest the banks of the Wda River. He quickly reached the site of the battle and by casting healing spells he allowed the knights to slaughter the cutthroats without suffering any losses. At the end of the battle, while he was treating one of the brave men, the latter told him about their order: they were the famous Knights of Anathaeum, at that time engaged in freeing the territories of The Spine from the threat of bandits. He told him about honor, contempt for danger and defense of the weak, thanked him for his courageous intervention and invited him to their headquarters, the Astenvale Monastery. Here Decanian was able to speak with several squires and knights and learn the values and goals of the Knights of Anathaeum. After a short period at the College of Elbion he returned to the monastery and officially applied for entry as a squire. The request was accepted and Decanian then entered the ranks of the Order. A special dispensation was granted him to continue his job as librarian and scholar at the College, now with the new task of caring for the ancient archives of the monastery.

From that moment on he alternates periods in Elbion and Astenvale, using his culture and aptitudes in the service of history and knowledge and his skills as a fighting healer in the service of the Order, with the hope, one day, of obtaining the title of Field Sworn.