Guglielmo Marconi (Italian pronunciation: ; 25 April 1874– 20 July 1937) was an Italian inventor, known for his development of Marconi's law and a radio telegraph system, which served as the foundation for the establishment of numerous affiliated companies worldwide. He shared the 1909 Nobel Prize in Physics with Karl Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy" and was ennobled in 1924 as Marchese Marconi.
Marconi was born in Bologna, the second son of Giuseppe Marconi, an Italian landowner, and his Irish wife, Annie Jameson, daughter of Andrew Jameson of Daphne Castle in the County Wexford, Ireland. Marconi was educated privately in Bologna in the lab of Augusto Righi, in Florence at the Istituto Cavallero and, later, in Livorno. As a child Marconi did not do well in school. Baptized as a Catholic, he was also a member of the Anglican Church, being married into it; however, he still received a Catholic annulment.
During his early years, Marconi had an interest in science and electricity. One of the scientific developments during this era came from Heinrich Hertz, who, beginning in 1888, demonstrated that one could produce and detect electromagnetic radiation—now generally known as radio waves, at the time more commonly called "Hertzian waves" or "aetheric waves". Hertz's death in 1894 brought published reviews of his earlier discoveries, and a renewed interest on the part of Marconi. He was permitted to briefly study the subject under Augusto Righi, a University of Bologna physicist and neighbour of Marconi who had done research on Hertz's work. Righi had a subscription to The Electrician where Oliver Lodge published detailed accounts of the apparatus used in his (Lodge's) public demonstrations of wireless telegraphy in 1894. Marconi also read about Nikola Tesla's work.