The territory was occupied by the Burmese army .
Local leaders declared themselves overlords including the lords of Sakwangburi , Pimai , Chanthaburi , and Nakhon Si Thammarat .
The territory was occupied by the Burmese army and local leaders declared themselves overlords including the lords of Sakwangburi , Pimai , Chanthaburi , and Nakhon Si Thammarat .