Cheras) are forever generous in spite of their reduced means". Other names in common use for the Cholas are Choda, Killi (கிள்ளி), Valavan (வளவன்), Sembiyan (செம்பியன்) and Cenni. Killi perhaps comes from the Tamil kil (கிள்) meaning dig or cleave and conveys the idea of a digger or a worker of the land. This word often forms an integral part of early Chola names like Nedunkilli, Nalankilli and so on, but almost drops out of use in later times. Valavan is most probably connected with "valam" (வளம்) – fertility and means owner or ruler of a fertile country. Sembiyan is generally taken to mean a descendant of Shibi – a legendary hero whose self-sacrifice in saving a dove from the pursuit of a falcon figures among the early Chola legends and forms the subject matter of the Sibi Jataka among the Jataka stories of Buddhism. In Tamil lexicon Chola means Soazhi or Saei denoting a newly formed kingdom, in the lines of Pandya or the old country. Cenni in Tamil means Head. History The history of the Cholas falls into four periods: the Early Cholas of the Sangam literature, the interregnum between the fall of the Sangam Cholas and the rise of the Imperial medieval Cholas under Vijayalaya (c. 848), the dynasty of Vijayalaya, and finally the Later Chola dynasty of Kulothunga Chola I from the third quarter of the 11th century. Early Cholas The earliest Chola kings for whom there is tangible evidence are mentioned in the Sangam literature. Scholars generally agree that this literature belongs to the late centuries before the common era and the early centuries of the common era. The internal chronology of this literature is still far from settled, and at present a connected account of the history of the period cannot be derived. It records the names of the kings and the princes, and of the poets who extolled them. The Sangam literature also records legends about mythical Chola kings. These myths speak of the Chola king Kantaman, a supposed contemporary of the sage Agastya, whose devotion brought the river Kaveri into existence. Two names are prominent among those Chola kings known to have existed who feature in Sangam literature: Karikala and Kocengannan. There are no sure means of settling the order of succession, of fixing their relations with one another and with many other princelings of around the same period. Urayur (now a