Romanov,
Mikhail Feodorovich 1598-1645; 1st Romanov czar & founder of the dynasty
See Romanov in American Heritage Dictionary 4
also Ro·ma·noff(rōˈmə-nôfˌ, rō-mäˈnəf, rə-)
Russian ruling dynasty (1613-1917) that began with the accession of Czar Michael (1596-1645; ruled 1613-1645) and ended with the abdication of Nicholas II during the Russian Revolution.