Who authored "The Undertaker's Manual," the first book published on the topic of cleansing for the afterlife?

Dr. Auguste Renouard is recognized as the author of "The Undertaker's Manual," which holds the distinction of being the first published work that addressed the topic of cleansing for the afterlife. The manual was significant in shaping early funeral practices and the professional standards of the funeral service industry. Renouard's work presented guidelines and knowledge pertinent to the care of the deceased, influencing how undertakers approached their responsibilities.

This publication marked a pivotal moment in the formalization of funeral service practices, articulating methods for preparing the body and addressing the cultural and ceremonial aspects associated with death. Dr. Renouard's insights helped to elevate the profession of undertaking, providing a foundational resource for those in the field. The other individuals mentioned, while notable in various historical contexts, did not author this seminal text.