Friedrich Wilhelm Bessel was a German astronomer, mathematician, physicist, and geodesist. He was the first astronomer who determined reliable values for the distance from the sun to another star by the method of parallax. Wikipedia
Born: July 22, 1784, Minden, Germany
Died: March 17, 1846 (age 61 years), Königsberg
Children: Johanne Marie Erman, Wilhelm Bessel, Marie Bessel, and more
Parents: Carl Friedrich Bessel and Friederike Ernestine
Education: University of Göttingen
Grandchildren: Johanne Marie Erman, Wilhelm Erman, and Heinrich Erman