The history of Lanka is steeped in confusion during the period following the reign of king Agbo which concluded at the beginning of the seventh century. Since there was no powerful king, weak kings struggled to gain kingship. Due to this situation countrymen had to undergo untold misery. Gangs of looters who ransacked Dagobas and temples too made their appearance.
After king Agbo, there dawned the era of Agbo- ll. He was instrumental in the construction of the Giritale and Kantale tanks. During his time a part of the Thuparamaya dagoba had collapsed.A thera named Jothipala informed the king about this matter. The king removed the sacred right jaw bone relic of Lord Buddha enshrined in the Dagoba and deposited it at Lovamahapaya, and after having attended to the repair work of the damaged part, redeposited the relic back in the previous place. His period of rule lasted for about a decade.
King Agbo who succeeds king Sulu Mugalan became famous for his work on the construction of tanks. During his kingship there lived the famous twelve poets named, Sakdamala, Asakdamala, Demi, Bebiri, Dalabiso, Anuruth, Dalagoth, Dalasala, Kithsiri, Paravadu, Suriyabahu and Kasupkotaepa. Historical stories unfold that their literary works have been set ablaze by marauders coming from South India. This king, who administered righteously, ruled the country for nearly thirty three years. .
Thus, the kingship befell on prince Mugalan, who later became famous as a constructer of irrigation tanks. Since his uncle too bore the name Mugalan, he came to be known as Sulu Mugalan. Being a pious king he thought of teaching dhamma to small children. He got the dhamma transcribed into to verse- form, and employed minstrels to go about on elephant back during night time, singing these verses, so that fellow countryman could hear them.
At the time when news of the sudden death of King Silakala reached his eldest son Mugalan, the second son Dappula had already come and assumed kingship. Prince Mugalan, who was disgruntled by this unreasonable act, made preparations to wage war. Prince Dappula too started to get ready for an attack. Since it was felt unreasonable to destroy the lives of fellow countrymen by waging a war for a personal cause, the two of them came to an agreement to fight single handed on elephant back. Accordingly, the two of them arrived at the battle ground on elephant back, and while the trumpeting elephants started to attack each other with their heads, the neighbor hood trembled. The bodies of both elephants became blood stained. In the end when prince Mugalan’s elephant gored with its tusks prince Dappula’s elephant making the latter to retreat, Prince Dappula in a defeated mood got ready to slay his own head. Even though at that moment prince Mugalan pleaded with prince Dappula not to do so, it was not possible to prevent Dappula from slaying his own head, that which rose itself unrighteously..
Silakala, later on came to be known as Amba Herana Salamevan. It is said that this was because he had partaken some mango fruits which he had received after distributing them to the venerable Sangha.
By clan, Silakala was a Lambakarna. His queen happened to be the sister of king Mugalan.
King Silakala begot three sons named Mugalan, Dappula and Upatissa. Whereas, the king allocated the authority over the eastern part of Lanka to his eldest son Mugalan, and the Malaya Rata to the second prince, he kept with him prince Upatissa while engaging himself in his royal duties. King Silakala ruled for a period of thirteen years
On the death of King Kumara Dhatusena, his son Kirthisena succeeds to the throne. After him it is said that king sivaya and Upatissa ascended the throne. While prince Kashyapa, son of king Upatissa was spending his time righteously, a person named Silakala craving for power started to gather forces. Even though at the beginning prince Kashyapa riding an elephant was capable of suppressing Silakala, at the end Silakala was victorious
During the eighteen years of pious rule the sacred hair relics of Lord Buddha were brought to Lanka from Dambadiva. Subsequently, it is prince Kumaradasa, son of king Mugalan, who becomes the king. He is also identified by the name of Kumara Dhatusena. He was a very intimate friend of Kalidasa, the great Indian poet who composed the famous epic Meghaduta. On hearing the death of Kalidasa he was so grief stricken that he committed suicide by leaping into the burning pyre of Kalidasa. It is said that on seeing this tragedy, five queen consorts of king Kumaradasa too followed suit. At this place where seven persons got burnt, seven Bo saplings came to being, and hence the place came to be popularly known as Hathbodhiwatte.
On prince Mugalan’s ascension to the throne of Lanka, the bhikshus of the Maha viharaya cordially welcomed the new king. The ministers who were loyal to king Kashyapa were subjected too much harassment in the hands of king Mugalan. But, later on after listening to the sermons of the Bhikshus, he calmed down and set forth to embark on pious activities. King Mugalan who did not even wish to see Sigiriya, the marvelous creation of his brother, bestowed it to the Sangha.
At the time king Sigiri Kashyapa was completing eighteen years of rule prince Mugalan landed in Lanka.Even though king Kashyapa had been advised not to fight with prince Mugalan, yet he takes his armies and goes to fight with him.
Whilst fighting, king Kashyapa noticing a puddle of mud, got his elephant to go backwards so that he could advance forward taking another route. Unfortunately, Kashyapa’s armies misunderstood the reversal of the elephant to be an act of the king to retreat, and as a result the worriers of the king forsook him and fled away. Thus, king Kashyapa became helpless in the face of prince Mugalan’s men. According to Vamsa katha lore, it is said that when Mugalan’s men were applauding victoriously, king Kashyapa tragically beheaded himself.