Historical kdrama  about queen/princess who fall in love with servant /commoner? Thanks

  • Ballad of Seodong - but there is a birth secret of the ML. But the FL who is the Princess really did fall for the ML when he was an outcast commoner/refugee

My Country: The New Age; The Tale of the Nokdu; Legend of the Phoenix (one of the best); Nokdu Flower; Haechi (one of the most intelligent scripts)