[2] By 1865, he also served on the board of directors of the China Steamship and Labuan Coal Company alongside T. C. Bruce, Sir J. D. Elphinstone, Harry Borradaile, H. B. Loch, Henry Alers Hankey, William Miller, Edward Pereira, G. Lathom Brown, Alexander Sinclair, James N. Daniel and John Hickie.

[3] In 1890 he was a guest at Tranby Croft, and was the croupier for the Prince of Wales on the successive nights of the royal Baccarat scandal.

[4] During his life, David also acquired ritual objects from Levi Salomons, a British financier, which he added to his existing collection that his family had brought with them from the Far East.

[1] His wife died a year later, in 1906, and she was buried in the Novo Beth Chaim Cemetery in Mile End, East London.

[6] Photographers Maull & Fox took his portrait in costume as a Persian prince for the Duchess of Devonshire's 1897 fancy-dress ball.