There are several chronological issues that arise with this statement, which is one of the reasons why Wren's theory is rejected by many. The earliest examples of the pointed arch in Europe date from before the Holy War in the year 1095; this is widely regarded as proof that the Gothic style could not have possibly been derived from Saracen architecture. Several authors have taken a stance against this allegation, claiming that the Gothic style had most likely filtered into Europe in other ways, for example through Spain or Sicily. The Spanish architecture from the Moors could have influenced the emergence Gothic style long before the Crusades took place. This could have happened gradually through merchants, travelers and pilgrims.