Frances de la Tour of Fire" (2005) and "Harry Potter and the Deathly Hallows – Part 1" (2010). Other television roles include Emma Porlock in the Dennis Potter serial "Cold Lazarus" (1996), Headmistress Margaret Baron in BBC sitcom "Big School" and Violet Crosby in the sitcom "Vicious". De la Tour was born in Bovingdon, Hertfordshire, to Moyra (née Fessas) and Charles de la Tour (1909–1982). The name was also spelt De Lautour, and it was in this form that her birth was registered in Hemel Hempstead, Hertfordshire, in the third quarter of 1944. She has French, Greek, and Irish ancestry. She was educated at
Geoffroy IV de la Tour Landry of the king of Brittany, where part of the ancestral possessions of the lords of La Tour lay. In the novel "The Once and Future King", by T.H. White, a reference is made that states "before King Arthur had made his chivalry, the Knight of the Tower Landry had been compelled to warn his daughter against entering her own dining hall in the evening unaccompanied – for fear of what might happen in the dark corners". In the novel "Timeline", by Michael Crichton, a reference is made which states Geoffroy IV de la Tour Landry Geoffrey IV de la Tour