👑Queen Elizabeth II of the United Kingdom, a descendant of King Edward VII, is currently the oldest living great~great~grandchild of Queen Victoria as well as her oldest living descendant. Elizabeth Ramsay, born in 1963 and a descendant of Prince Arthur, is the youngest great-great-grandchild of 👑Queen Victoria. 

Add on to the royal upbringings of the then-children, Elizabeth and Philip also happened to share a distant relative, as both are descendants of Queen Victoria. The monarch and her husband are therefore distantly related, as both were the great-great-grandchildren of Queen Victoria and thus third cousins.