Arthur Blennerhassett (1687–1758)
Arthur Blennerhassett KC was an Anglo-Irish lawyer and politician.
He was son of the politician and lawyer Robert Blennerhassett of. Clonmel, County Tipperary, and Alice Osborne, daughter of Sir Thomas Osborne, 5th Baronet and Katherine Butler, and widow of Thomas Warter. He was at school in Dublin and graduated from the University of Dublin in 1708. The same year he entered the Middle Temple. He was called to the Irish Bar in 1714, made King's Counsel in 1728, and served as Prime Serjeant in 1742. In 1727 Blennerhassett was elected to the Irish House of Commons as Member of Parliament for Tralee. He was raised to the bench as a justice of the Court of King's Bench in 1743 and served until his death in 1758.
He married firstly Mary Pope, daughter of Captain Richard Pope and Anne Ingolsby, and secondly Mary Rice, daughter of Edward Rice and widow of Colonel William Degge; on her mother's side she was a granddaughter of Thomas St Lawrence, 13th Baron Howth. He had no children by either marriage. He lived at Dawson Street in Dublin and Riddlestown Park in County Limerick, which he inherited from his uncle Edward Blennerhassett, who married the heiress Elizabeth Windall. Arthur made extensive improvements to Riddlestown.
According to Elrington Ball he was falsely accused of the murder of John St Leger, a younger son of Viscount Doneraile, who was killed in a duel in 1720.
A portrait of the judge hangs in the library of Glin Castle.
