The House of Alpin is a royal dynasty that ruled Scotland from the 9th to the 13th centuries. It is believed to have descended from Alpin mac Eochaid, a king of the Scots, and played a significant role in the unification of the Scottish kingdom. The house is known for its contributions to the establishment of a centralized monarchy in Scotland. Members of the House of Alpin include notable figures such as Kenneth MacAlpin, who is often regarded as the first King of Scots. The dynasty's influence waned over time, leading to the rise of other noble families, but its legacy remains an important part of Scottish history.