of the castle. The 2nd Earl's castle is mostly what remains today. In 1667 the 2nd Earl married Lady Alice Moore, daughter of the Earl of Drogheda, and their only child died in infancy. Lady Alice discovered that her father-in-law, the 1st Earl of Clanbrassil, had stated in his will that should Henry die without issue the estate should be divided between five Hamilton cousins, the eldest sons of his five uncles. She destroyed the will and had her husband make his own will in 1674, leaving the estate to her. Henry died of poisoning in 1675, then Lady Alice died in 1677, leaving the estate to her brother. The cousins, however, were aware of the 1st Earl's will and pursued their rights as inheritors. The matter was concluded 20 years later when a copy of the original will was discovered. By then, the cousins were all dead. The last to die was James Hamilton of Neilsbrook, County Antrim, son of Archibald Hamilton, the next brother of James Hamilton, 1st Viscount Claneboye. James Hamilton of Neilsbrook had been confident of a settlement in his favour and had bequeathed the estate to be divided in two, with one half going to his daughter Anne Stevenson, née Hamilton, and the other half to his younger brothers Gawn and William Hamilton. In 1697 the probate court divided the castle, with Gawn and William gaining the main house and the two towers and their niece Anne receiving the bawn and gate house. Gawn and William had to open a new entrance on the north side in order to enter their castle. 18th and 19th centuries William died without children in 1716 and the castle passed to successive generations of Gawn Hamilton's descendants. Gawn's great-grandson Archibald Hamilton Rowan, an Irish nationalist of the United Irishmen, lived in the castle as one of his homes between 1806 and 1834 after his return from exile in America. Hamilton Rowan's grandson, Archibald Rowan-Hamilton, and his wife employed architect Sir Charles Lanyon from 1850 to renovate the castle, creating its romantic silhouette with the addition of the turrets. James Hamilton of Neilsbrook's daughter Anne married Hans Stevenson and her estate passed to her son James Stevenson, then to his daughter Dorcas, later Dorcas Blackwood, 1st Baroness Dufferin and Claneboye (1726–1807), and on to Dorcas's great-grandson Frederick Temple Blackwood, 5th Baron Dufferin and Claneboye (1826–1902). In 1860 the 5th Baron