USS Malvern (eventually renamed Ella and Annie) was a large steamer captured by the Union Navy during the American Civil War. She was then used by the Union Navy to patrol navigable waterways of the Confederacy to prevent the South from trading with other countries. Malvern was built in 1860 as William G. Hewes by Harlan and Hollingsworth Co., Wilmington, Delaware, for Charles Morgan’s Southern Steamship Co. She commenced regular service between New York City and New Orleans, Louisiana, 11 January 1861.