The Roman emperor Julian received an embassy from a Pandya about 361 CE. A Roman trading centre was located on the Pandyan coast (Alagankulam - at the mouth of the Vaigai river, southeast of Madurai). Pandyas also had trade contacts with Ptolemaic Egypt and, through Egypt, with Rome by the first century, and with China by the 3rd century. The 1st century Greek historian Nicolaus of Damascus met, at Damascus, the ambassador sent by an Indian King "named Pandion or, according to others, Porus" to Caesar Augustus around 13 CE (Strabo XV.1-4, and Strabo XV.1-73).