Colonel John Blennerhassett (1691 – 5 May 1775) was an Anglo-Irish politician who represented two constituencies in the Irish House of Commons between 1709 and 1775.
[1] Blennerhassett was born in County Kerry, the eldest son of John Blennerhassett and Margaret Crosbie.
He was first elected as a Member of Parliament in 1709, taking his father's seat representing County Kerry.
He was Father of the Irish House of Commons.
[citation needed] He married Jane Denny, with whom he had two sons, John and Arthur, and four daughters, including Mary, who married Lancelot Crosbie, who like his father-in-law was MP for Kerry.