John Langdon (typographer) Langdon is known mostly through his association with Dan Brown, and the novels "Angels & Demons", "The Da Vinci Code," "The Lost Symbol, Inferno, and Origin". The protagonist of these novels was named Robert Langdon as a tribute to John Langdon, and he will continue to be so for his next 12 books, an estimate given by Dan Brown himself. Langdon is now a professor of typography and corporate identity at Drexel University in Philadelphia. He continues to do work on ambigrams, as well and fine art works that incorporate language, type, and philosophy. Langdon credits his paternal grandparents for
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