Cattleya Yvette La Baume Le Blanc de La Fontaine (カトレア Katorea, Pronunciation: /katleə ɪvɛt la bom lə blan də la fɔnten/ or /katlɛjɑ ɪvɛt la bom lə blɑ̃ də la fɔ̃ten/) is Louise’s middle sister. She believes Louise has potential, and that she is a wonderful girl. More than anything, she longs for Louise’s happiness, and is fine with the fact that Louise has feelings for a peasant. She is a kindhearted person, and even helped Louise escape from her house to go back to the Academy. She knows Louise well, and could easily tell that Louise was in love with Saito, even when Louise herself denied it. Although Cattleya is eight years older than Louise,she isn't married due to the fact she is ill. Her mother and father are the Duke of La Vallière and Karin, Duchess of La Vallière.