The third volume of the Iberia Pontificia concerns the pontifical relations of the Castilian Diocese Palencia up through 1198 based on 200 extant registers. With the Diocese Palencia this third volume of the Iberia Pontificia is concerned for the first time with a Suffragan diocese from the Church province of Toledo. Besides dealing with the pontifical contacts of the bishops and the cathedral chapter it also looks at the relations between the papacy and the monasteries of the dioceses found in extant registers. This volume offers a comprehensive compilation of the archives and historiographical evidence as well as an extensive bibliography on the individual recipients and a historical introduction.