Harriet O'Brien (died 1851) (1775–1851) Parents Mary Carrick Edward Dominic O'Brien Children Sarah Maria Clotilda Hoare Harriet Hoare Elizabeth Hoare John Lynam Parish Hoare Joseph James Parish Hoare William O'Bryen Hoare Sir Edward Hoare, 4th Baronet Siblings James O'Brien, 3rd Marquess of Thomond Murrough O'Brien Lord Edward O'Brien John O'Brien Mary O'Brien William O'Brien, 2nd Marquess of Thomond Partners Sir Joseph Wallis Hoare, 3rd Baronet