Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
Jacob Emden
Jacob Emden, also known as Ya'avetz (June 4, 1697 – April 19, 1776), was a leading German rabbi and talmudist who championed Orthodox Judaism in the face of the growing influence of the Sabbatean movement. He was acclaimed in all circles for his extensive knowledge, thus Moses Mendelssohn, founder of the Jewish Enlightenment movement, wrote to him as "your disciple, who thirsts for your words." Although Emden did not approve of the Hasidic movement which evolved during his lifetime, his books are highly regarded amongst the Hasidim. Thirty-one works were published during his lifetime, ten posthumously, while others remain in manuscript.