In the Witcher 3 quest, "Ashen Marriage," Geralt assists Triss Merigold and her fiancé, Castello, with their impending nuptials in Novigrad. His tasks include ridding the canals of monsters, procuring alcohol, and selecting a wedding gift for Triss. The gift's significance impacts Triss's response; a memory rose, a callback to The Witcher 2, evokes a powerful emotional reaction, unlike more commonplace presents.

However, Dijkstra's revelation that Castello is connected to witch hunters throws a wrench into the proceedings. Castello, it transpires, is being coerced – the hunters threaten to expose his daughter from a previous marriage.

Geralt has the option of disclosing this information to Triss, either privately or with Castello present. Regardless of his approach, the wedding is called off. Triss is either disillusioned by her fiancé's deception or appreciative of his candor, but ultimately concludes the marriage was premature.

This plot development offered a chance to enrich Geralt and Triss's dynamic and further explore the complexities of supporting characters.