Scottish Russians are Russians with full or partial Scottish ancestry. Scottish migration to Russia occurred primarily during the early 17th-century Polish–Muscovite War, the Ingrian War, and the Thirty Years' War. Some estimates of the number of Scottish settlers in Russia during the 17th century are as high as 100,000. This has led some demographers to believe that the current number of Scottish Russians could be up to 1 or 2 million. There are believed to be around 400 different Russian surnames that owe their names to Scottish ancestors.[1]