David Hamilton-Temple-Blackwood, 4th Marquess of Dufferin and Ava, was a British nobleman born on March 21, 1866. He was known for his role in the British aristocracy and held the title of Marquess from 1902 until his death in 1945. His family lineage is connected to the Dufferin estate in Ireland, which has historical significance. In addition to his noble duties, Hamilton-Temple-Blackwood was involved in various social and political activities. He served as a member of the House of Lords and was known for his contributions to the British Red Cross during World War I. His legacy includes a commitment to public service and community welfare.