Collection Manuscript/Mixed Material Image 1 of Item 37. Letter from Sultan Muhammad Kanzul Alam ibn Sultan Omar Ali Saifuddin al-marhum of Brunei to Colonel William Farquhar. 6 Syaaban 1237 (28 April 1822). Item 37. Letter from Sultan Muhammad Kanzul Alam ibn Sultan Omar Ali Saifuddin al-marhum of Brunei to Colonel William Farquhar. 6 Syaaban 1237 (28 April 1822).