In the past too, there were Dynasties!

The kings of this dynasty were said to be a favourite subject of poetry as far as Malaya. The last ruler was Puloma the pious (Puliman) who after his conquests ended his life by drowning himself in the holy Ganges, emulating an ancestor. So the Chinese for some time referred to India as Poulomeun-koue, the country of Puliman. Name this dynasty which ruled for over 4 centuries.