 Although May was a great-grandchild of George III, she was only a minor member of the British royal family.Her father, the Duke of Teck, had no inheritance or wealth and carried the lower royal style of Serene Highness because his parents' marriage was morganatic.The Duchess of Teck was granted a parliamentary annuity of £5,000 and received about £4,000 a year from her mother, the Duchess of Cambridge, but she donated lavishly to dozens of charities.