 Complete the following phrase:  Born the fourth son of John Kerr, 7th Marquess of Lothian and Lady Cecil Chetwynd Talbot. Kerr was educated at Radley College and joined the first-rate HMS Prince Regent as a naval cadet in August 1853. He saw action during the Crimean War serving in the first-rate HMS Neptune in March 1854 and then in the third-rate HMS Cornwallis in May 1855. Promoted to midshipman in August 1855, he joined the frigate HMS Shannon on the East Indies and China Station in August 1856. He saw action during the 