The article abovementioned was elaborated from a medieval Anniversary Book, mostly unpublished, hence the importance of editing it entirely, which was produced in the Collegiate of Santiago of Coimbra. We, basically, discuss the contribution for the study of the implementation of the Jacobean cult in that city. Furthermore, we collected countless elements to enhance knowledge of the socioeconomic life of the city under consideration and the relationship of the Christians in regard to death and the heavenly home. We emphasised the delivery of goods and money to Santiago clerg y as a pledge for several ceremonies intended for the forgiveness of sins.