The king and the brothers next sought for a man who could tell them the location of Singuttara Hill. No human knew the location but Sakka, King of the nats did, and guided them to the Hill. Singuttara Hill is known by seven names of which one is Trikhumba, meaning 'three pots' and signifying three pot-shaped hills. Tikhumba became Tikun and Dagon and later Changed to Lagun in Mon.
When the brothers asked Sakka where the Hairs should be shrined, Sakka could not tell them where the earlier relics were enshrined because they were of such antiquity and he was not that old. However, Sule Nat knew where Kakusandha Buddha's staff was enshrined, Yawhani Nat knew where Konagamana Buddha's water-dipper was enshrined. Hmawbi Nat revealed that he had been assigned to guard the sacred objects. Finally, Gautama Buddha's Hairs were enshrined and stupa consecrated on the full moon day of Tabaung (March 6,c.588 B.C.).
Along time after that, there that, there being no one to worship at the Lagun shrine, it fell into ruin and was covered with jungle.Tradition states that 200 years after Buddha's Parinirvana in 543 BC. Sona and Uttara, two monks from Sri Lanka brought King Asoka to the Pagoda. The King had the jungle cleared and the Pagoda repaired. In the fifth century A.D. King Duttabaung paid homage at the Pagoda. In the 11th century, King Anawratha of Bagan offered gold and silver umbrellas and built a pagoda near the town of Twante across the Yangon River. Dalla, which is now a town on the bank opposite Yangon, was then located on the Twante Ridge and was more important than Dagon. Dagon at that time lay in low lying often water-logged land. Sule Pagoda, now in downtown Yangon, stood on a small island in the swamp, to the west down to he Hlaing River and Yangon /River to the south .The Shwedagon (then called Kyak Lagun in Mon) was reached across a causeway.
The discovery of a votive of the Bagan period at Tadagale to the north of Yangon shows that the laterite ridge at the end of which Shwedagon lay was a scene of activity in the Bagan period and the ridge may have provided a road southwards to the Shwedagon Pagoda and Dagon Village beyond. After the collapse of Bagan in the 13th century and the rise of Mon power in the 14th with the capital at Bago, Dagon became a place of some importance, though not as a commercial port but as a centre of religious life. At onetime Dagon was reported to contain thirty-two ordination halls Binnya U (1348-83), Mon king of Bago created a pagoda of height 18 m. (60'). Dagon was also a place of refuge for princes who did not find Bago safe. Binnya U's son, Binnya Nwe, later King Rajadarit, who had a chronicle to himself, fled to Dagon when he ran away with his half-sister Talamidaw. Dagon at that time was not a walled city but a fort of logs.
Successive Mon King of the 15th century raised the height of Pagoda by encasing earlier pagoda and embellishing the new. King Binnyayan (1426-46)cut down the hill and enlarged the base to five terraces to sustain the height but before he could finish the work he died. The work was continued by his successor, Binnyawaru (1446-50) who was helped by his mother, Queen Shin Saw Bu, the only regnant queen of Myanmar. She was ably assisted by the commander of the army, soldiers, attendants and the common people. They raised the height of the Pagoda to 90.6 m(302'). Queen Shin Saw Bu was the first to gild the Pagoda. She went on the scales and let them take her weight which was a bout 40 kg.(90 lbs). She donated that weight in gold. She dedicated a vast expanse of glebe lands which virtually covered the whole of modern Yangon. Her successor King Dhammazedi created the stone inscriptions standing on Pagoda Hill. He also donated a huge bell which a Portugese adventurer took away but which fell into the river and has not been recovered. In 1539, Tabinshwehti, who had conquered Bago, placed a jewelled finial on the Pagoda. Casper de Cruz, a Dominican priest, who was the country between 1550-60 said that "the Brames (Burmese) were a great people, very rich of gold and precious stones, chiefly of rubies; a proud nation and valiant. They have very rich and gallant shippings garnished with gold which they sail in the rivers; they use vessels of gold silver; their houses are of timber and well wrought. The kingdom is very great." In 1572, Bayinnaung rebuilt the Pagoda to 360' and had it reguilded. The shrine had been reduced to rubble during an earthquake in 1564.Bayinnaung embarked from Bago in a golden barge in the form of the mythical hintha bird, surmountedby a golden spire. The barge was escorted by a large fleet of 300 golden canoes and 1000 war boats which filled the Bago River as far as the eye could see. The grand fleet floated down to Dagon. Bayinnaung repeated the trip in 1581.
By the end of the 16th century the Shwedagon Fair was attracting people not only from Myanmar but also from distance lands such as Laos and Cambodia. The Dagon Fair was one of the chief markets for overseas trade rivalling Bago and Thanlyin. The Delta was effecting yet another change. The Bago River too was silting up off Thanlyin, and sea-going vessels were finding it difficult to navigate the reaches opposite the town. Thus, Dagon was becoming the port of choice. After the founding of the Shwedagon Pagoda. Alaungpaya's conquest of lower Myanmar is the second most important event in the history of Dagon. May 1775 marks the beginning of the modern town when Alaungpaya, to commemorate his victory, changed its name from Dagon to Yangon, "Enmity Exhausted."
sourcee: Internet