- First Cousins of King Charles III
- First Cousins of Prince William, The Prince of Wales
- First Cousins of Queen Elizabeth II
- First Cousins of Prince Philip, Duke of Edinburgh
- First Cousins of King George VI and King Edward VIII (Duke of Windsor)
- First Cousins of King George V
- First Cousins of King Edward VII
- First Cousins of Queen Victoria
- First Cousins of King George IV and King William IV
- First Cousins of King George III
- First Cousins of King George II
- First Cousins of King George I
- First Cousins of Queen Mary II and Queen Anne
- First Cousins of King William III
- First Cousins of King Charles II and King James II
- First Cousins of King Charles I
- First Cousins of King James I
- First Cousins of Queen Elizabeth I
- First Cousins of Queen Mary I
- First Cousins of King Edward VI
- First Cousins of King Henry VIII