as indicated by several more Councils of Toledo that repeated these laws and extended their stringency. These entered canon law and became legal precedents in other parts of Europe as well. The culmination of this process occurred under King Sisibut, who officially decreed a forced Christian conversion upon all Jews residing in Spain. This mandate apparently achieved only partial success: similar decrees were repeated by later kings as central power was consolidated. These laws either prescribed forcible baptism of the Jews or forbade circumcision, Jewish rites, and the observance of the Sabbath and other festivals. Throughout the 7th century the Jews were persecuted for religious reasons, had their property confiscated, were subjected to ruinous taxes, forbidden to trade and, at times, dragged to the baptismal font. Many were obliged to accept Christianity but continued privately to observe the Jewish religion and practices. The decree of 613 set off a century of difficulty for Spanish Jewry, which was only ended by the Muslim conquest. The political aspects of the imposition of Church power cannot be ignored in these matters. With the conversion of the Visigothic kings to Chalcedonian Christianity, the bishops increased their power, until, at the Fourth Council of Toledo in 633, they selected a king from among the royal family, a practice previously reserved for nobles. This was the same synod that spoke out against those who had been baptized but had relapsed into Judaism. As far as the Visigoths were concerned, the time for religious pluralism "was past". By the end of the 7th century, Catholic conversion made the Visigoths less distinguishable from the indigenous Roman citizens of the Iberian peninsula; when the last Visigothic strongholds fell to the Muslim armies, whose subsequent invasions transformed Spain from the beginning of the 8th century, their Gothic identity faded. In the eighth through 11th centuries, the muwallad clan of the Banu Qasi claimed descent from the Visigothic Count Cassius. Architecture During their governance of Hispania, the Visigoths built several churches in the basilical or cruciform style that survive, including the churches of San Pedro de la Nave in El Campillo, Santa María de Melque in San Martín de Montalbán, Santa Lucía del Trampal in Alcuéscar, Santa Comba in Bande, and Santa María de Lara in Quintanilla de las Viñas. The Visigothic crypt (the Crypt of San Antolín) in the Palencia Cathedral is a Visigothic chapel from the mid-7th century, built