Footnotes:
(1) The names of two large trees in the Pterocarpus genus, Papilionaceae family, are P. indicus Willd. The grey bark is cracked into shallow grooves along the length. The branches droop low. The fruit is a round, flat pod with wings surrounding it and one seed bulging out. Planted as a shade tree along the road. and public parks Padauk Ban, Padauk Lai, or Indian Padauk is also called type P. Macrocarpus Kurz. The bark is grey-brown, roughly cracked into deep grooves, and the branches are slightly raised. The fruit is a round, flat pod with wings surrounding it. It contains 1-4 seeds. It grows in mixed forests. The wood is popularly used to make furniture, called padauk pa or padauksen. Pterocarpus indicus is a species of Pterocarpus native to southeastern Asia, northern Australasia, and the western Pacific Ocean islands, in Cambodia, southernmost China, East Timor, Indonesia, Malaysia, Papua New Guinea, the Philippines, the Ryukyu Islands, the Solomon Islands, Thailand, and Vietnam. Pterocarpus indicus was one of two species (the other being Eysenhardtia polystachya) used as a source for the 16th- to 18th-century traditional diuretic known as lignum nephriticum. Many populations of Pterocarpus indicus are seriously threatened. [Wikipedia]
(2) Khlong Wat Pradu is a defunct canal once situated off the city island in the northeastern area of Ayutthaya in the Phai Ling Sub-district. The canal was named after the temple Wat Pradu along its bank. Khlong Wat Pradu linked up with an important north-south canal, Khlong Ayodhya - Khlong Kudi Dao, which started north at Khlong Hantra (a former stretch of the old Pa Sak River) and ran passing by Wat Kudi Dao, where further south the waterway joined Khlong Kramang. Temples on its north bank (or vicinity) were from West to East: Wat Krajom, Wat Khian, Wat Pradu and Wat Jakrawan on its south bank: Wat Nang Chi, Wat Khok Pradu, Wat Rong Tham and Wat Kudi Dao. Khlong Wat Pradu has been buried for the most part to create a road for motor vehicles and to build tracks for the railway.
(3) The renaming of 'Rong' by 'Song' seems to come from the following: 'rong', which means 'building', sounds like a coffin (Th: long). The word 'Rong' was not felt as a very auspicious name for a temple, hence the name change. The same occurred to Wat Wong Khong, before known as Wat Rong Khong and later changed into Wat Wong Khong. Other Ayutthayan temples merged at a certain stage are Wat Sri Pho (Wat Sri Pho & Wat Kalayaram) and Wat Tha Ka Rong (Wat Tha & Wat Ka Rong).