ultraroyalist
(ˌʌltrəˈrɔɪəlɪst) na right-wing political faction which sat in the French parliament between 1815 and 1830a person who is an extreme or staunch supporter of the monarchy
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014