The Marquess of Abercorn is a title in the peerage of the United Kingdom, created in 1868. The title is associated with the Abercorn family, which has historical roots in both Scotland and Ireland. The family seat is Glenarm Castle in Northern Ireland, a significant estate with a rich history. The current Marquess, as of 2023, is James Hamilton, who succeeded his father in 2018. The title has a long lineage, with the first Marquess being James Hamilton, a prominent figure in the 19th century. The Abercorn family has been involved in various political and social activities throughout their history.