 Complete the following phrase:  Hornby had no patron once the Aberdeen ministry came to power in December 1852 and instead cared for his fathers estate at Lordington and played no part in the Crimean War. Following a change of government, Hornby became commanding officer of the frigate HMS Tribune on the Pacific Station in August 1858. When he arrived at Vancouver Island with a naval brigade, he found that a unit of American troops was about to take over the San Juan Islands in a dispute known as the 