Wenedyk is a naturalistic constructed language, created by the Dutch translator Jan van Steenbergen (who also co-created the international auxiliary language Interslavic). It is used in the fictional Republic of the Two Crowns (based on the Republic of Two Nations), in the alternate timeline of Ill Bethisad. Officially, Wenedyk is a descendant of Vulgar Latin with a strong Slavic admixture, based on the premise that the Roman Empire incorporated the ancestors of the Poles in their territory. Less officially, it tries to show what Polish would have looked like if it had been a Romance instead of a Slavic language. On the Internet, it is well-recognized as an example of the altlang genre, much like Brithenig and Breathanach.