Towards the end of his life, Eco came to believe that his family name was an acronym of "ex caelis oblatus" (from Latin: a gift from the heavens). As was the custom at the time, the name had been given to his grandfather (a foundling) by an official in city hall. In a 2011 interview, Eco explained that a friend happened to come across the acronym on a list of Jesuit acronyms in the Vatican Library, informing him of the likely origin of the name.