Collection Manuscript/Mixed Material Image 1 of Item 26. Letter from Sultan Muhammad Kanzul Alam ibn Sultan Omar Ali Saifuddin al-marhum of Brunei to Colonel William Farquhar. 26 Rejab 1236 (29 April 1821). Item 26. Letter from Sultan Muhammad Kanzul Alam ibn Sultan Omar Ali Saifuddin al-marhum of Brunei to Colonel William Farquhar. 26 Rejab 1236 (29 April 1821).