Open the Coffin

"First in a dream then into my office came a centuries old ghost, tapping on my desk with a fan."
The mother of emperors, kings and queens, herself sole sovereign over half the world for fifty-one years, Juana was Archduchess of Austria, Queen of Castile, Queen of Aragon, Sicily, Sardinia, Naples, Mexico, Peru and "all the lands to the west of Africa." Yet Simon & Schuster's great reference book The Timetables of History does not even mention her death in 1555. Two and a half centuries before the United States was born, Juana the First of Spain attempted to establish a democratic government that would have spanned the Americas from pole to pole. How could such a person simply vanish into a footnote of modern times? Betrayed first by her husband, then her father, then her son, Juana was declared insane. Under iron-clad secrecy she was committed to the horrors of a stone room without light for nearly a decade. The answer seems all too sinister. She was a young widow never trained to rule, sitting on the throne of the greatest empire of the time. She was a woman too passionate, too outspoken, too much trouble. The dark secret for five hundred years was an international conspiracy. She was made to disappear.
Juana's appearance in a Twentieth Century office building was independently perceived by other people at the same time. And what is to be made of her odd Birth Card connections with the author?