Princess Tatiana is the fiancee of King Louis. Her home country became rich from diamonds lately. She wasn't fond of Louis, but rather of D'Artagnan Jr. because he was the only one who didn't take her orders. When it turns out that the diamonds are fake, Cardinal Mazarin tries to cover it up by killing the man that sold the diamonds. In the end, Tatiana's cousin was behind the attacks on her. She was jealous and wanted the crown. Tatiana and Louis don't get married, instead, she ""French"" kisses him and he proclaims that from that time forward France would kiss like that. Nothing interesting happens between D'Artagnan Jr. and Jacqueline. (thetvdb.com)