William Robert FitzGerald, 2nd Duke of Leinster, KP, PC (Ire), an Irish liberal politician and landowner, dies at Carton House in Maynooth, County Kildare, on October 20, 1804.

FitzGerald is born on March 13, 1749, in Arlington Place, Piccadilly, London, the second son of nine sons and ten daughters of James Fitzgerald, 20th Earl of Kildare and later 1st Duke of Leinster, and his wife, Lady Emily Lennox. He is educated at Eton College (1758–63). He is the elder brother of the 1790s revolutionary Lord Edward FitzGerald, and is a first cousin of the English liberal politician Charles James Fox.

FitzGerald makes his Grand Tour between 1768 and 1769. During the same time, he is also a Member of Parliament (MP) for Kildare Borough. He then sits in the Irish House of Commons for Dublin City until 1773, when he inherits his father’s title and estates. He is appointed High Sheriff of Kildare for 1772. Politically he is a liberal supporter of Henry Grattan‘s Irish Patriot Party and he co-founds the Irish Whig Club in 1789. He controls about six Kildare members of the Irish House of Commons. In 1779, he is elected colonel of the Dublin Regiment of the Irish Volunteers.

In November 1775, FitzGerald marries Emilia Olivia Usher, daughter of the 1st Baron Saint George and Elizabeth Dominick and sole grand daughter of Sir Christopher Dominick. They have three sons and six daughters.

In 1770, FitzGerald is chosen Grandmaster of the masonic Grand Lodge of Ireland, a post he holds for two years. He is re-elected for another year in 1777. In 1783, he is among the first knights in the newly created Order of St. Patrick.

In 1788–89, FitzGerald is Master of the Rolls in Ireland. In theory a senior judicial office, it is then largely a sinecure, but so blatant a choice of a man who is wholly unqualified for it gives rise to unfavourable comment, and a few years later it becomes the rule that the Master must be a lawyer of repute.

FitzGerald is a supporter of Catholic emancipation and helps to found the Royal College of St. Patrick at Maynooth on land he donates, in 1795. Withdrawing from Parliament with Grattan in 1797, he moves to England to be with his sick wife and remains there during the Irish Rebellion of 1798.

FitzGerald’s homes are at Carton and Kilkea Castle in County Kildare, and at Leinster House in Dublin (now the home of the Oireachtas). He is a founder member of the Order of St. Patrick in 1783 and of the Royal Irish Academy in 1785, and is a large investor in the Royal Canal company launched in 1790. His family’s estates of 60,000 acres (25,000 Ha) in Kildare are in three main parts, around Maynooth, Rathangan and Athy. He rebuilds the main bridge in Athy over the River Barrow.

FitzGerald dies of strangury, a urinary tract disorder, at Carton House on October 20, 1804. He is buried in Kildare Abbey. His funeral is so well attended that the mourners reach across The Curragh. He is succeeded by his second, but eldest surviving, son, Augustus Frederick Fitzgerald, as 3rd Duke of Leinster.