The "black spider" memos are letters and memos, to British government ministers and politicians over the years, written by Charles, Prince of Wales, the eldest child and heir apparent of who?
Black spider memos:  As the modern British monarch remains politically neutral by tradition, the letters are controversial because of Prince of Wales' position as the eldest child of the British monarch Queen Elizabeth II and heir apparent to the British throne. Charles, Prince of Wales: Charles, Prince of Wales (Charles Philip Arthur George; born 14 November 1948) is the eldest child and heir apparent of Queen Elizabeth II.
Queen Elizabeth II