Lady Louisa Cochrane (died 1942) (d. 1942) Parents Thomas Cochrane, 11th Earl of Dundonald Louisa Harriet Mackinnon Children Hugh O'Neill, 1st Baron Rathcavan Louisa O'Neill Arthur O'Neill William O'Neill Rose O'Neill Alice O'Neill Siblings Lady Elizabeth Mary Harriet Cochrane Douglas Cochrane, 12th Earl of Dundonald Thomas Cochrane, 1st Baron Cochrane of Cults Lady Alice Laura Sophia Cochrane Lady Esther Rose Georgina Cochrane Thomas Alexander Cochrane Partners Edward O'Neill, 2nd Baron O'Neill