Sophia Margaret Beauchamp St. John (died 1911) (d. 1911) Parents Helen Young Oliver St. John Children Arthur Arnold McIlwaine William St. John McIlwaine Helen McIlwaine Cecilia Lambert McIlwaine Siblings Jane Matilda St. John Oliver St John Anne Olivia St. John St. Andrew St. John Helen Frances St. John Partners William Frederick McIlwaine