Aoife Campbell (née O'Sullivan) is the woman who Tristan Campbell wanted to marry. She came to Geraldine's house on christmas day and Tristan asked Geraldine to marry them. Geraldine accepted even though she was hurt by the mistaken request. Geraldine also initially seems to have trouble pronouncing Aoife's name correctly (pronounced EE-fa). She only appears in The Christmas Lunch Incident, when she and her then fiancée set up a wedding date with the vicar.