The Romanov family was the last imperial dynasty to rule Russia. They first came to power in 1613, and over the next three centuries, 18 Romanovs took the Russian throne, including Peter the Great, Catherine the Great, Alexander I and Nicholas II. During the Russian Revolution of 1917, Bolshevik revolutionaries toppled the monarchy, ending the Romanov dynasty. Czar Nicholas II and his entire family—including his young children—were later executed by Bolshevik troops.