Sylvanus was especially social for a wood elf; he liked meeting people of all backgrounds. Sylvanus had a great love of archery.
He was extremely vocal in matters of Tethyrian politics. He wanted Tethyr to become a union of city states and not a kingdom under a monarch. He argued that this would provide a balance of powers. He would get in heated arguments with those who disagreed with him.
After he became a count, Silvanus made every effort to avoid going to Darromar for official business, requesting instead to meet officials and nobles elsewhere. This was because of his intense hatred of that city because of things he had experienced there in the past.
Sylvanus did not wear magical armor of any kind, but he did own boots of speed. He was armed with a magical longbow and longsword. He also carried a stone of good luck and wore a ring of regeneration.
Sylvanus supposedly lived in Uluran Keep after his appointment as count; however, as an elf, he preferred sleeping out doors and was only seen in the manor every four days or so. His frends, Paddy and Manfred Arbustle lived with him there, at his request.
During his time with the Company of Eight, he would sometimes go off with his own elven friends and Paddy Stoutfellow to harass bandits on the Trade Way. He found this enjoyable, and it also boosted his own reputation as a hero.
Later, as magistrates' chancellor, Sylvanus worked underneath the just chancellor and oversaw the magistrates of the various courts throughout the country. In this position, he was able to ensure that the judges were honest, since he had little trust of the current political system.
Early in the Tethyr's new dynasty under Queen Zaranda Star, Sylvanus assisted Dukes Allain Kevanarial and Mirthal Aendryr in establishing trade agreements between the elves of the Wealdath and Tethyr.
Sylvanus wandered as an adventurer for some time in Tethyr—especially along the Trade Way—and in north Calimshan. In 1343 DR, he led an elven expedition against the drow of Forest of Mir and also on another occasion.
During the time that the Company of Eight sought to remove Ernest Gallowglass from power in the city of Ithmong, Sylvanus was captured and tortured for a time. So strongly was this incident ingrained in his memory that he avoided the city at all costs after that.
After the end of the Tethyrian Interregnum, despite swearing he was opposed to a Tethyrian monarchy, Sylvanus was appointed as count of Uluran and given the task of serving under Lord Tardeth Llanistaph, former leader of the Company of Eight, as magistrates' chancellor. He found himself surprised at the benevolence of the new queen.
Secretly, Silvanus wanted to reform the Company of Eight, with he, Paddy, and Manfred as initial members. He wanted to test the loyalty of the new judges in the easternmost regions of the kingdom.
- There is a conflict between editions regarding to which tribe Sylvanus belonged. Hall of Heroes describes him as an Elmanesse elf, but Lands of Intrigue: Book One: Tethyr calls him a Suldusk elf. This article accepts the former, because only the Elmanesse elves were wood elves, and Sylvanus is clearly described as a wood elf in Hall of Heroes.
- Dungeon #38: "A Blight on the Land"
- Steven E. Schend (1997). Lands of Intrigue: Book One: Tethyr. (TSR, Inc.), p. 72. ISBN 0-7869-0697-9.
- Ed Greenwood, et al (1989). Hall of Heroes. (TSR, Inc), p. 125. ISBN 0-88038-711-4.
- Scott Haring (1988). Empires of the Sands. (TSR, Inc), p. 46. ISBN 0-8803-8539-1.
- Steven E. Schend (1997). Lands of Intrigue: Book One: Tethyr. (TSR, Inc.), p. 91. ISBN 0-7869-0697-9.
- Steven E. Schend (1997). Lands of Intrigue: Book Three: Erlkazar & Folk of Intrigue. (TSR, Inc), p. 31. ISBN 0-7869-0697-9.
- Steven E. Schend (1997). Lands of Intrigue: Book One: Tethyr. (TSR, Inc.), p. 64. ISBN 0-7869-0697-9.
- Ed Greenwood, et al (1989). Hall of Heroes. (TSR, Inc), p. 120. ISBN 0-88038-711-4.