One of the eleventh Lord's younger brothers was George Keith Elphinstone who was a distinguished naval officer. He served on ships that protected the British shipping off the east coast of America. He was created Baron Keith which was promoted to the rank of Viscount in 1814. The Viscount's nephew was William George Elphinstone who was a colonel at the Battle of Waterloo in 1815. He was later promoted to commander-in-chief of the Bengal army in 1837 and led the disastrous Afghan campaign of 1841.