Katharine O'Donnelly: Katharine O'Donnelly. Actress: Mary Queen of Scots. Katharine O'Donnelly is known for Mary Queen of Scots (2018), The Head (2020) and Clique (2017).
Known For: Mary Queen of Scots (Young Holyrood Servant), The Head (Dr. Maggie Mitchell), Clique (Gemma), The Phoebus Files (Sarah)
