Footnotes:
(1) Sub-district called after the village Ban Samphao Lom near the Chao Phraya River. The village is on the Monthon Krung Kao map (1916 CE). John Bowring (1857, London, John W. Parker and Son, West Strand), in his book ‘The Kingdom and People of Siam’, wrote: "Between the modern and the ancient capital, Bangkok and Ayuthia, is a village called the “Sunken Ship,” the houses being erected round a mast which towers above the surface at low water."
(2) The Bangkok River was in the Ayutthayan era, the stretch of water of the Lopburi River from Bang Kraja at the southern point of Ayutthaya till its confluence with the Chao Phraya River at Bang Sai. The Bangkok River became a stretch of the Chao Phraya River in the 19th century after the latter was diverted from Ban Kum to Ayutthaya in 1857 CE. The stretch of water from Ban Kum until Bang Sai is called today the Bang Ban Canal and joins the Noi River at Nam Tao. The latter flows south until Bang Sai, where it joins the present Chao Phraya River.
References:
[1] Blog from Bidya Sriwattanasarn - http://bidyarcharn.blogspot.com/retrieved - 8 June 2010.
[2] Ibid.
[3] Ibid.