 His refusal to do so led to a falling-out with his father.Four months after being sent down from Oxford, on 28 August 1811, the 19-year-old Shelley eloped to Scotland with the 16-year-old Harriet Westbrook, a pupil at the same boarding school as Shelley's sisters, whom his father had forbidden him to see.Harriet Westbrook had been writing Shelley passionate letters threatening to kill herself because of her unhappiness at the school and at home.