Charles V (1500 - 1558) Holy Roman Emperor. Son of Philip I and Joanna of Castile. Husband of Isabella of Portugal.His siblings were Mary of Hungary, Isabella of Austria, Catherine of Austria and Ferdinand I. His paternal grandfather was Maximilian I.
spanned nearly 4 million square kilometres (1.5 million square miles), and were
the first to be described as "the empire on which the sun never