One of the earliest historical records that mentions the name "Sunda" appears in the Sanghyang Tapak inscription dated 952 saka (1030 CE) discovered in Cibadak, near Sukabumi. In 1225, a Chinese writer named Chou Ju-kua, in his book "Chu-fan-chi", describes the port of "Sin-t'o" (Sunda), which probably refers to the port of Banten or Kalapa. By examining these records, it seems that the name "Sunda" started to appear in the early 11th century as a Javanese term used to designate their western neighbours. A Chinese source more specifically refers to it as the port of Banten or Sunda Kelapa. After the formation and consolidation of the Sunda Kingdom's unity and identity during the Pajajaran era under the rule of Sri Baduga Maharaja (popularly known as King Siliwangi), the shared common identity of Sundanese people was more firmly established. They adopted the name "Sunda" to identify their kingdom, their people and their language.