At this juncture he had sore need of friends. The unexpected revolt of his personal serfs at Kamba was a veritable disaster, for they had charge of his largest canoe, the sails and stores of his gunboat, and his principal magazine. A few days after his formal installation as Vunivalu on July 26, 1853, his army was beaten off by the Kambans, his faithful lieutenant Verani was assassinated in Ovalau, and the rebellion spread. He knew that he had now to reckon with traitors among his own kin. Ratu Mara,[28] who had for many months been a voluntary exile from Mbau, had returned to the delta to be the figure-head of the rebellion, and Tui Levuka, whose authority was not sufficient to control the rebels of Ovalau, persuaded the Europeans to send for him. At this moment a schooner arrived from Sydney with a consignment of arms for Thakombau, and the European consignee, Pickering, declined to deliver them. On October 30, 1853, Thakombau yielded to the importunities of the missionaries so far as to allow the Rev. Joseph Waterhouse[29] to take up his residence at Mbau, probably in the hope that he would be a useful advocate in the event of misunderstanding with European governments. In November he received an unexpected visit from King George Tubou of Tonga, then on his way to Sydney. He turned this visit to good account by promising the king a large canoe (the celebrated Ra Marama) if he would revisit him on his return home. There now seemed to be a prospect of a favourable turn to his fortunes. Tui Levuka, doubtful of the success of his rebellion, made a secret compact with him to play the traitor to his own side, and Thakombau now prepared to crush Kamba. His plans were impeded by the secession of his kinsman Koroi-ravulo, who secretly bribed five hundred of his army to absent themselves from the rendezvous, and in March, 1854, he set forth with barely 1500 men. He had foolishly neglected to seize the opportunity of a hurricane, which had levelled the defences of Kamba, and when the assault was made the Kamba garrison had been stiffened with a number of whites and half-castes from Levuka, who foresaw that the fall of Kamba would place Levuka in the power of the victorious army. Thakombau commanded the assault in person. Having cleared broad roads for retreat in case of a sortie 500 men advanced to the attack, but they were seized with a sudden panic, and the whole army fled in confusion to their canoes. A further defeat at Sawakasa, the stronghold of Koroi-ravulo, completed Thakombau's discomfiture.