Paper Title
Chao Phraya Mahindrasakdi Dhamrong (Peng Benyakul) and Thai Theatrical Development

Abstract
This study aimed to present the role of Chao Phraya MahindrasakdiDhamrong (Peng Benyakul; 1821-1894) as the close confidant of King Rama IV and important chancellor of King Rama V associated with Thai theatrical development during the period of King Rama IV and Rama V. He made a valuable contribution towards creating a new form of dance drama with many developed theatrical elements which included choreographing, costume designing, utilizing song that represented ethnicity of each character featuring in the play, and establishing a large theatre to stage performances for commercial purpose. As a result, his dance drama become very famous during that period and his theatrical development have been continually inherited from generation to generation until present time. Keywordsó Chao Phraya MahindrasakdiDhamrong (Peng Benyakul), Thai Theatrical Development.