It is also known that during these works, Juan de la Cuesta collaborated with Pedro de Argadero, a neighbor of Carrión de los Condes in the execution of the same, the latter being in charge of making the wooden structure over the vaults on which the roof rests, since the visitor read a knowledge that Juan de la Cuesta de Pedro de Argadero, a neighbor of Carrión, was making the body of the temple.