Phak Hai District

Phak Hai (, ) is a district ("amphoe") in the northwestern part of Ayutthaya Province, central Thailand.
History.
Historically, the district was named "Khwaeng" Sena Yai, which became converted to an "amphoe" at the end of the 19th century. In 1917, the name of district was changed to be Phak Hai after the central "tambon".
The name Phak Hai comes from the Nirat "Suphan" by Sunthorn Phu, which refers to a village named Ban Pak Hai. The spelling has changed however now, so it can also mean a kind of plant ("Momordica charantia") that grows in swamps. 
Geography.
Neighboring districts are (from the north clockwise) Wiset Chai Chan and Pa Mok of Ang Thong Province; Bang Ban, Sena, and Bang Sai of Ayutthaya Province; and Bang Pla Ma, and Mueang Suphanburi of Suphanburi Province.
Administration.
The district is divided into 16 sub-districts ("tambon"), which are further subdivided into 128 villages ("muban").
In media.
Phak Hai is the setting of a Thai country song, ("luk thung"), titled (; ) 'Phak Hai Girl'). It has been popular since around 1970s.