This document summarizes the achievements of Jeronimo de Ayanz y Beaumont, a 16th century Spanish scientist. It notes that he constructed and patented 48 inventions, with his most important being an early steam machine. The steam machine was used to remove water from mines in the early 17th century. The document places de Ayanz in the timeline of steam machine inventors, with his design pre-dating later major innovators like Newcomen, Watt, and Papin.