https://en.wikipedia.org/wiki/Chath_Piersath

see also  http://javaarts.org/artists/piersath-chath/

From Wikipedia:  “Chath Piersath, born in (Kop Nymit, Svay Sisophon District, in Battambang Province is a noted Cambodian American poet, painter and humanitarian. He creates both large and small portraits of people from his memory, often representing the social and economic disparity among Cambodians.”