Rose Eleanor Arbuthnot-Leslie (born 9 February 1987) is a Scottish actress. After winning a Scottish BAFTA for Best Acting Performance for her role in New Town, she rose to fame as Gwen Dawson in the ITV drama series Downton Abbey and as Ygritte in the HBO fantasy series Game of Thrones. She starred as Maia Rindell for three seasons of the CBS All Access legal and political drama The Good Fight.
Leslie was born in Aberdeen, Scotland and raised at Lickleyhead Castle in Aberdeenshire, her family's 15th-century ancestral seat, where she lived until the age of 10. Her father, Sebastian Arbuthnot-Leslie, is the Aberdeenshire Chieftain of Clan Leslie. Her mother is his wife Candida Mary Sibyl "Candy" Weld of Clan Fraser of Lovat, whose maternal great-grandfather was Simon Fraser, 13th Lord Lovat, and a descendant of King Charles II. Another great-grandfather of "Candy" Leslie (née Weld) was Frederick Weld, the 6th Prime Minister of New Zealand. Her family currently lives at the 12th-century Wardhill Castle in Old Rayne. Her great-great grandfather was Guillermo Landa y Escandón, who served as Mayor of Mexico City, and she is cousin-in-law to the British historian William Dalrymple (FRAS). Leslie's ancestors include Ambrose Lisle March Phillipps De Lisle, politician Charles March-Phillipps and MP James Grimston, 3rd Earl of Verulam.