John Blennerhassett Peerage person ID=279170 Parents Avice Conway Robert Blennerhassett Children Tryphena Blennerhassett Conway Blennerhassett John Blennerhassett Anne Blennerhassett Thomas Blennerhassett Arthur Blennerhassett Elizabeth Blennerhassett Mary Blennerhassett Edward Blennerhassett Benjamin Blennerhassett Siblings Thomas Blennerhassett Anne Blennerhassett Partners Elizabeth Cross