Constance Butler was an Irish socialite who was the wife of Anglo-Irish banker Harry Butler. She was a staunch supporter of the Irish republican cause during the Irish War of Independence, and she was one of its most important financial backers as Lady President of the Irish Prisoners Family Welfare Fund. In 1920, she approached Dublin Castle intelligence officer Mark Sturgis and asked him to release the imprisoned republican journalists Eithne Drury and Diarmuid McWilliams. After her husband was found to have tipped off the British about US Senator Daniel Shea's work with the IRA, however, she and her husband were banished from Ireland by the IRA.