There may be some uncertainty concerning the date of the Castle House instrument. NPOR has it as 1896. However, my Grandparents, both Calne people and married in 1909, related that Henry Harris's wife 'requested' an organ in Castle House after hearing the St Mary's installation. The irony was that neither Henry Harris nor his wife could play a keyboard instrument. Census returns show that Harris was not living in Castle House in 1891 but was by 1901, so 1896 could be feasible.