Roger Casement was born to a Protestant father and Catholic mother. Orphaned at 13 he was then largely brought up by his paternal relatives the Young family of Galgorm Castle. He attended Ballymena Academy.
A staunch Nationalist, he helped to set up the Irish Volunteers, an organisation prepared to fight to secure Home Rule. He was also instrumental in the Howth gun running of July 1914 which helped arm the Irish Volunteers.
After the outbreak of the First World War he attempted to broker a deal with Germany to supply arms to the Irish Volunteers and to support the Irish Nationalist cause. He was tried for treason and executed on the 3rd August 1916 at the age of 51.