Robert Langdon Robert Langdon Professor Robert Langdon is a fictional character created by author Dan Brown for his "Robert Langdon" book series: "Angels & Demons" (2000), "The Da Vinci Code" (2003), "The Lost Symbol" (2009), "Inferno" (2013) and "Origin" (2017). He is a Harvard University professor of history of art and "symbology" (a fictional field related to the study of historic symbols, which is not methodologically connected to the actual discipline of semiotics). Tom Hanks portrays Langdon in the "Robert Langdon" film series, starting with the 2006 film adaptation of "The Da Vinci Code", reprising the role in the 2009 film adaptation
Robert Adrian Langdon presented evidence for his controversial theory that the cannons were from the "San Lesmes", a ship of the Spanish Loaisa Expedition. Langdon proposed that the "San Lesmes" had foundered on the atoll, thrown off the cannons to refloat, sailed to Tahiti where some members of the crew remained, and then onward to discover New Zealand. This theory had all but been forgotten until Greg Scowen published his novel "The Spanish Helmet" in 2011, basing much of the story on the presumed journal of the captain of the "San Lesmes", Francisco de Hoces. Robert Adrian Langdon Robert Langdon (1924–2003) was an