Yves "Gauche" Bouvier (1807-1907) was the son of Victor Bouvier II and Gabrielle Gateau. He married Marie Trousseau and had four children: Cléo Bouvier,Théo Bouvier, Fr. René Bouvier and Marcel Bouvier. He is Marge's great-great-great grandfather. And the great-great-great-great grandfather of Bart, Lisa and Maggie Simpson, Ling Bouvier.