Papal election decree of Nicholas II, 1059 126 Section III. The Struggle between the Empire and the Papacy, 1073-1250 132-259 60. Prohibition of simony and marriage of the clergy, 1074 134 61. Simony and celibacy; Roman council, 1074 134 62. Celibacy, 1074 135 63. Celibacy, ninth general council in the Lateran, 1123 135 64. Prohibition of lay investiture, 1078 136 65. Dictatus papæ, _ca._ 1090 136 66. Letter of Gregory VII commending his legates, 1074 139 67. Oath of the patriarch of Aquileia to Gregory VII, 1079 140 68. Oath of Richard of Capua to Gregory VII, 1073 140 69. Letter of Gregory VII to the princes wishing to reconquer Spain, 1073 142 70. Letter of Gregory VII to Wratislav, duke of Bohemia, 1073 143 71. Letter of Gregory VII to Sancho, king of Aragon, 1074 143 72. Letter of Gregory VII to Solomon, king of Hungary, 1074 144 73. Letter of Gregory VII to Demetrius, king of Russia, 1075 145 74. Letter of Gregory VII to Henry IV, 1075 146 75. Deposition of Gregory VII by Henry IV, 1076 151 76. Letter of the bishops of Germany to Gregory VII, 1076 153 77. First deposition and excommunication of Henry IV by Gregory VII, 1076 155 78. Agreement at Oppenheim, 1076 156 79. Edict annulling the decrees against Gregory VII, 1076 157 80. Letter of Gregory VII concerning the penance of Henry IV at Canossa, 1077 157 81. Oath of Henry IV 160 82. Countess Matilda gives her lands to the church, 1102 160 83. First privilege of Paschal II to Henry V, 1111 161 84. Second privilege of Paschal II to Henry V, 1111 163 85. Concordat of Worms, 1122. Promise of Calixtus II 164 86. Concordat of Worms. Promise of Henry V 165 87. Election notice, 1125 166 88. Anaclete II gives title of king to Roger of Sicily, 1130 168 89. Coronation oath of Lothar II, 1133 169 90. Innocent II grants the lands of Countess Matilda to Lothar II, 1133 170 91. Letter of Bernard of Clairvaux to Lothar II, 1134 171 92. Letter of Bernard of Clairvaux to Conrad III, 1140 172 93. Letter of Conrad III to John Comnenus, 1142 173 94. Letter of Wibald, abbot of Stablo, to Eugene III, 1150 174 95. Letter of Frederick I to Eugene III, 1152 176 96.