Hagiography, the writing of saints' lives, plays a crucial role in the Catholic process of canonization. Before someone can be declared a saint, a rigorous Church investigation is undertaken. This investigation heavily relies on hagiographical accounts, which present evidence of holiness. These accounts, compiled over time, detail the individual's life, miracles, and virtues. The existence of substantial hagiographical material constitutes a recognized stage in the process. If the investigation reveals sufficient evidence of holiness, the process continues, culminating in a declaration by the Pope recognizing the individual as a saint. Hagiography, therefore, provides the crucial historical and biographical foundation for canonization.