Yeah, he's one of the historical/legendary personas that blended together into the modern, Western concept of Santa Claus.

Other contributions include the English Father Christmas (originally a separate folk personification of Christmas/midwinter festivities, now melded into a synonym of Santa Claus) and possibly even Odin, who appeared in many ancient midwinter tales, connected to Wild Hunt legends, in which he soared through the night sky pulled by his eight-legged horse Sleipnir, as well as packs or herds of flying animals, and spirits or fey creatures (think: elves), and was known as a gift-bringer.