Ordnance. Commencement of the current house In 1739, as the Ingoldsby family had lost most of their money, the lease was sold back to the 19th Earl of Kildare, who employed Richard Cassels (1690-1751) to design the existing house. This was the same year the FitzGerald family bought Frescati House. Castle (originally Cassels) was also responsible for some other grand Irish houses, including: Castle Hume, on the shores of Lower Lough Erne in County Fermanagh; Summerhill House in County Meath; Westport House in County Mayo; Powerscourt House in County Wicklow; and, in 1745, Kildare House (later renamed Leinster House) in Dublin, which he also built for the FitzGeralds. In 1747, the 20th Earl of Kildare (created His Grace the 1st Duke of Leinster in 1766) married Lady Emily Lennox, daughter of the 2nd Duke of Richmond and great–granddaughter of King Charles II. Lady Emily played an important role in the development of the house and estate as it is today. She created the Chinese Room (bedroom of Queen Victoria) and decorated the famous Shell Cottage on the property with shells from around the world. One of their 23 children was the famous Irish patriot Lord Edward FitzGerald, a leader of the 1798 rebellion. 19th century Carton remained unaltered until 1815, when His Grace The 3rd Duke of Leinster (1791-1874) decided to sell Leinster House to the Dublin Society (renamed the Royal Dublin Society in 1820) and make Carton his principal residence. He employed Richard Morrison to enlarge and re-model the house. Morrison replaced the curved colonnades with straight connecting links to obtain additional rooms, including the famous Dining Room. At this time, the entrance to the house was moved to the north side. Twentieth- and twenty-first century history Carton remained in the control of the FitzGeralds until the early twentieth century when the 7th Duke of Leinster (1892-1976) sold his life interest to a moneylender, Sir Harry Mallaby-Deeley, to pay off gambling debts of £67,500. The 7th Duke, who was known as Lord Edward FitzGerald up until he inherited the dukedom in February 1922, was originally third in line to succeed, so he did not think he would ever inherit. However, both of his older brothers were unmarried and predeceased him. His eldest brother was the 6th Duke of Leinster (1887-1922), who had succeeded as a child to the dukedom and estates in December 1893 but who suffered from serious