Hi! I was searching for info on Marcellin and found your site.I am a gr-gr-grandaughter of Marcellin and Royal..my mother is the daughter of Maude St.Vrain, who was the daughter of Charles , who was Marcellins son..[ his brother was Felix and a sister named Mary.].My mother,Charlotte St. Vrain Valentine has gotten me interested in finding St. Vrains! I believe Christine St. Vrain Howard is my 2nd cousin! This is fascinating.. Please email me with more information about Royal.. Thanks!