Locach

Lochac, Locach or Locat is a country far south of China mentioned by Marco Polo. The name is widely believed to be a variant of Lo-huk 罗斛: the Cantonese name for the southern Thai kingdom of Lopburi (also known as Lavapura and Louvo), which was a province of the Khmer Empire at the time.

However, it has also been suggested that Polo or his sources in China were referring to other locations or conflating several different places as Lochac.