I'll start.
General Patrick Ronayne Cleburne: Pat Cleburne "The Stonewall of the West" was an Irish immigrant and British Army veteran that became one of the CSA's most notable names in the Western Theatre. General Cleburne distinguished himself during the successful conquest of Kentucky by routing the Union at the Battle of Richmond, Kentucky. As the war drew to a close by late 1862-early 1863, Cleburne became one of the most popular Major Generals in the Army of Kentucky.
After the war ended, he remained in the Confederate States Army and rose to the rank of commanding General of the Army of Kentucky, becoming the first Irishman to do so in the CSA by the 1880s. He married Susan Tarleton of Alabama in 1864. His progressive views towards slaves and blacks were largely held secret until he came out in support of the Arkansas Manumission Bill in 1895. His grandson fought as a Major General in the First Great War and his lineage lives in Eastern Arkansas to this day.