He was a commoner who married into nobility, and soon started abusing his power. He had a long history of violence and was rumored to have assaulted Cayleigh before the latter's marriage and death. He also raped his stepson Kevan; this was witnessed by his son Thaddeus, who grew up traumatized by the event.
After years of marriage, the Duchess of Lillah divorced him. While the public remains unknowing of the reason, it's very likely that his abuse of Kevan was the reason. When this didn't deter his attempts to approach Kevan, Arisse had him killed and his body abandoned in a forest, making it look like an accident. Ever since, Arisse and Kevan remain estranged.
- While never made explicit, it can be theorised that Arisse married him out of love. This is supported by Arisse's political mindset contradicting her desition to marry a commoner, and the controversy this would bring to their union, his eventual criminal history notwithstanding.