Who is considered to have contributed most to modern reflexology?

Dr. William H. Fitzgerald is often credited as a key figure in the development of modern reflexology. In the early 20th century, he introduced the concept of zone therapy, which laid the groundwork for reflexology's principles. His work was later expanded upon by Eunice Ingham, who further developed the practice and created detailed maps of the feet and hands, solidifying reflexology as a therapeutic technique.