King Don Juan Dharmapala took a decision after listening to the advice of the Franciscan monks. That was to name the King of Portugal as the claimant to the throne of Kotte, after the demise of the king, because the king had no son to succeed him. Accordingly, the last will was written on the 12th of August 1580 AD. By this time, King Mayadunne too had grown old and feeble.