Rowland Blennerhassett (1780-1854) (1780–1854) Parents Millicent Agnes Yielding Sir Rowland Blennerhassett, 1st Baronet Children Mary Blennerhassett John Blennerhassett Alice Blennerhassett Richard Francis Blennerhassett Lucy Blennerhassett Millicent Agnes Blennerhassett Letitia Blennerhassett Rowland Blennerhassett Siblings Sir Robert Blennerhassett, 2nd Bt. Arthur Blennerhassett Richard Francis Blennerhassett William Blennerhassett Partners Letitia Hurly