Answer of Eugene III, 1152 178 97. Treaty of Constance, 1153 178 98. Stirrup episode, 1155 180 99. Treaty of Adrian IV and William of Sicily, 1156 181 100. Letter of Adrian IV to Frederick I, 1157 183 101. Manifesto of Frederick I, 1157 186 102. Letter of Adrian IV to Frederick I, 1158 187 103. Definition of regalia, 1158 188 104. Letter of Eberhard, bishop of Bamberg, 1159 190 105. Letter of Alexander III in regard to disputed papal election of 1159 192 106. Letter of Victor IV, 1159 194 107. Account given by Gerhoh of Reichersberg, _ca._ 1160 196 108. Preliminary treaty of Anagni, 1176 196 109. Peace of Constance, 1183 199 110. Formation of the duchy of Austria, 1156 202 111. The bishop of Würzburg becomes a duke, 1168 203 112. Decree of Gelnhausen, 1180 205 113. Papal election decree of Alexander III, 1179 207 114. Innocent III to Acerbius, 1198 208 115. Innocent III grants the pallium to the archbishop of Trnova, 1201 208 116. Innocent III to the archbishop of Auch, 1198 209 117. Innocent III commands all in authority to aid his legates, 1198 210 118. Innocent III to the king of Aragon, 1206 211 119. Innocent III to the French bishops, 1198 211 120. Innocent III forbids violence to the Jews, 1199 212 121. Innocent III to the archbishop of Rouen, 1198 213 122. Innocent III forbids laymen to demand tithes from the clergy, 1198 213 123. Oath of the prefect of Rome to Innocent III, 1198 214 124. Oath of John of Ceccano to Innocent III, 1201 215 125. Innocent III to the archbishop of Messina, 1203 216 126. Innocent III to the English barons, 1206 217 127. Innocent III to Peter of Aragon, 1211 218 128. Innocent III grants the title of king to the duke of Bohemia, 1204 218 129. Innocent III to the English barons, 1216 219 130. Innocent III decides the disputed election of Frederick, Philip of Suabia, and Otto, 1201 220 131. Treaty between Philip of Suabia and Philip II of France, 1198 227 132.