It’s hard to believe that a historical figure whose life was so well documented could still be shrouded in mystery. But the famed explorer Christopher Columbus’s personal timeline has been so enigmatic that across Europe, scientists, historians and everyday people with an interest in the past are still searching for the truth behind his legacy.

For example, we know where and when Columbus died -- in the northwestern Spanish city of Valladolid, in 1506 -- but there are questions about where his body lies. For decades, the Spanish city of Seville has argued with the capital city of the Dominican Republic, Santo Domingo, over which can lay claim to Columbus’s burial site. And with good reason: Columbus’s remains were moved at least three or four times over the course of 400 years. The distances were great, too. From Valladolid, his bones were moved in 1509 to the Monasterio de la Cartuja, a monastery near Seville that can still be visited today. Then, in 1537, his daughter-in-law moved his remains (along with those of her dead husband) to the Catedral Primada de America in Santo Domingo – perhaps because, some historians believe, Columbus wanted to be buried in the New World. More than 250 years later, when Spain ceded Hispaniola (a region encompassing the Dominican Republic and Haiti) to France in 1795, his bones took yet another journey to keep him within Spanish possession, this time to Havana, Cuba. They stayed there for about 100 years until the Spanish-American War in 1898, when they were transferred back to Seville, to the Catedral de Sevilla.

During all that, it’s possible that Columbus’s bones were mixed up with someone else’s -- which is what some Dominicans argue, pointing to a discovery in 1877 of a tomb-like chest in the Santo Domingo cathedral with an inscription reading, “Illustrious and distinguished male, don Cristobal Colon”.

There has been some clarification in recent years, however, thanks to advances in DNA testing. In 2006, according to the Associated Press, Spanish researchers took DNA from bones in Seville that are purported to be Columbus’s and compared it with DNA from the bones known to be those of his brother, Diego, also located in Seville. The samples turned out to be a match, though  researchers pointed out that this strong evidence does not completely rule out the possibility of the bones in Santo Domingo also belonging to the explorer.

Equally murky is the matter of Columbus’s nationality. Theories vary as to whether the voyager was Italian, Spanish, French, Polish, Portuguese… the list goes on. Another 2006 study, carried out by some of the same geneticists who looked into Columbus’s death, sought to use DNA once more to solve this second mystery. The bulk of historical evidence points to Columbus being either Spanish or Italian, so the researchers started there. Since the name Columbus is actually “Colon” in Spanish and “Colombo” in Italian, they gathered DNA samples from hundreds of men with these last names – because both their surnames and their Y chromosomes would be passed down from their fathers.

Unfortunately, the results were inconclusive. But another researcher, this time an American linguistics professor, took on the task of examining Columbus’s origins using a completely different approach. Estelle Irizarry scrutinized the man’s writings -- in letters and other documents -- in an attempt to figure out what his native language truly was. Her assessment was that although Columbus wrote in Spanish (the majority Spanish dialect), it was not his first language. Instead, she believes his grammar and sentence construction indicate that Catalan was his native language, and he would have been from what was then the Kingdom of Aragon in northeastern Spain.

Still, Italians who believe they share heritage with Columbus would argue that language does not tell the whole tale. Indeed, even with a mix of historic, scientific and linguistic research, the story of the explorer’s personal geography may never find completion. It is an unsolved puzzle that adds even more intrigue to an already controversial figure in history, inspiring travellers to delve deeper into his life in both Europe and the Americas.