In July the English levies gathered at Southampton. The king was to have embarked immediately, and a great fleet had been collected for the purpose; but, as he was on the point of sailing, Henry obtained news of a plot against his life on the part of Sir Thomas Grey, Lord Scroop, and Richard, Earl of Cambridge, the king's cousin. As Scroop was in constant attendance upon the king and slept in his room, the conspirators had little doubt that their purpose could be carried out, their intention being to proclaim the Earl of March king, and to summon assistance from Scotland. The three conspirators were tried by a jury and were all found guilty. Grey was beheaded, but his companions claimed to be tried again by their peers. No time was lost in carrying out the trial; all the lords assembled at Southampton were called together, and, after hearing the evidence, at once found the two nobles guilty, and they were immediately beheaded.