Complex sentence: Anne Jameson's son was Guglielmo Marconi (she married Giuseppe Marconi), who invented the wireless and carried out the first transatlantic morse code transmission in 1902 from Nova Scotia, Canada to England.
Split into simpler sentences: Anne Jameson's son was Guglielmo Marconi (she married Giuseppe Marconi). Guglielmo, of course, invented the wireless and carried out the first transatlantic morse code transmission in 1902 from Nova Scotia, Canada to England.