English name edit

According to Khmer name spelling (Khmer: ស្ពានព្រះទិស), English spelling should be something like: "Spean Preahtih/Preahtis", not "Praptos"; the same Khmer wikipedia ស្ពានប្រាប់ទិសកំពង់ក្តី "Praptih/Praptis". Any suggestions for the English name?

This link http://www.latinamericanstudies.org/cambodia/kampong-kdei-1.jpg shows: "Preah Toeus" or "Prap Toeus", which sound right.