Sir Henry Edward Duke, 1st Baron Merrivale was a British judge and Conservative politician. He served as Chief Secretary for Ireland between 1916 and 1918.

Plymouth was a parliamentary borough in Devon, which elected two members of parliament (MPs) to the House of Commons in 1298 and again from 1442 until 1918, when the borough was merged with the neighbouring Devonport and the combined area divided into three single-member constituencies.