The Catholic Encyclopedia Y Jehovah (Yahweh) Yakima Indians Yamasee Indians Yaqui Indians Yazoo Indians Yellow Knives Day of Atonement Ancient See of York Henry Benedict Maria Clement Stuart Use of York Youghal Marie-Marguérite d'Youville The Young Men's Institute Nicolas Ysambert Archdiocese of Yucatán Prefecture Apostolic of Yukon Yun-nan Yuracaré Indians St. Ives St. Ivo of Chartres