þorstis
þorstis is a surname of Old Norse origin. It is a patronymic, meaning it is derived from the given name of a father or ancestor. The name itself is composed of two elements: "þor," referring to the Norse god Thor, and "stis," which is a diminutive or a possessive suffix. Thus, þorstis can be interpreted as "son of Þor," "little Þor," or "belonging to Þor."
This surname likely originated in Scandinavia, specifically in regions with strong Norse influence such as Iceland,