Kool is a Dutch surname derived from a short form of the given name Nicolaas, the Dutch form of Nicholas. The name thus ultimately traces back to the Greek name Nikolaos, meaning 'victory of the people' (from nike 'victory' and laos 'people'). Saint Nicholas, a 4th-century bishop of Myra in Anatolia, is the most notable bearer and the reason for the name's widespread popularity in the Christian world. According to legend, he saved three impoverished sisters from prostitution by secretly providing dowries, which later inspired the figure of Santa Claus (Sinterklaas in Dutch). Etymology The surname Kool originated as a shortened form of the personal name Nicolaas, a common Dutch given name. This shortening was typical for patronymic-based surnames in the Netherlands, where diminutive or clipped forms of popular saints' names were used to identify individuals. It is related to other Dutch and Flemish variants such as Claasen (from Claas, a short form of Nicolaas), Colijn, Coolen, and Cools. The surname likely arose independently in different regions as a shortened form of the given name, leading to variations in spelling. Distribution While primarily a Dutch surname, the name Kool also appears in other countries due to emigration. In the United States, according to the 2010 Census, Kool is the 38,948th most common surname, with 566 individuals. The overwhelming majority (91.17%) of its bearers in the US identify as White. Outside of the Netherlands, it retains its Dutch cultural association. By comparison, related surnames such as Nikolaev (Russian) and Nikolić (Serbian) are based on the same root name in different languages, though Kool itself is exclusively of Dutch origin. Usage and Variants The main variant is Kool, but the short form of Nicolaas has generated many surnames in Dutch-speaking areas. These include Klaasen (from Klaas), Colijn (meaning 'little Nicolaas' with the suffix -ijn), and Cuyler, among others. These names often originated as patronymics (e.g., 'Claaszen' meaning 'Claas's son'), coalescing into fixed surnames in the late Middle Ages. Meaning: short form of Nicolaas (victory of the people) Origin: Dutch, from the given name Nicolaas Type: Surname Variants: Claasen, Cools, Klaasen, etc. Regions: Netherlands, Flanders, North America