Arthur MacMurrough Kavanagh, Irish politician, is born on March 25, 1831, at Borris House, a country house near Borris, County Carlow. His middle name is spelled MacMorrough in some contemporaneous sources.

Kavanagh is the son of Thomas Kavanagh MP and artist Lady Harriet Margaret Le Poer Trench, daughter of Richard Trench, 2nd Earl of Clancarty. His father traced his lineage to the medieval Kings of Leinster through Art Óg Mac Murchadha Caomhánach. He has two older brothers, Charles and Thomas, and one sister, Harriet or “Hoddy.” He is born with only the rudiments of arms and legs, though the cause of this birth defect is unknown.

Kavanagh’s mother insists that he be brought up and have opportunities like any other child and places him in the care of the doctor Francis Boxwell, who believes that an armless and legless child can live a productive life. Kavanagh learns to ride horses at the age of three by being strapped to a special saddle and managing the horse with the stumps of his arms. With the help of the surgeon Sir Philip Crampton, Lady Harriet has a mechanical wheelchair constructed for her son, and encourages him to ride horses and engage in other outdoor activities. He also goes fishing, hunting, draws pictures and writes stories, using mechanical devices supplementing his physical capacities. His mother teaches him how to write and paint holding pens and brushes in his mouth.

In 1846, Lady Harriet takes three of her children, Thomas, Harriet and Arthur, traveling to the Middle East for two years. Kavanagh nearly drowns in the Nile when he falls in while fishing and is rescued by a local antiquities salesman who dives in to pull him out.

In 1849, Kavanagh’s mother discovers that he has been having affairs with girls on the family estate, so she sends him into exile to Uppsala, and then to Moscow with his brother and a clergyman, whom he comes to hate. He travels extensively in Egypt, Anatolia, Persia, and India between 1846 and 1853. In India, his letter of credit from his mother is cancelled when she discovers that he has spent two weeks in a harem, so he persuades the East India Company to hire him as a despatch rider. Other sources say that this is due to the death of his eldest brother, Charles, of tuberculosis in December 1851, which leaves him with only 30 shillings.

In 1851, Kavanagh succeeds to the family estates and to the title of The MacMurrough following the death of his older brother Thomas. He serves as High Sheriff of County Kilkenny for 1856 and High Sheriff of Carlow for 1857. A Conservative and a Protestant, he sits in Parliament for County Wexford from 1866 to 1868, and for County Carlow from 1868 to 1880. On being elected, he has to be placed on the Tory benches by his manservant. The Speaker of the House of Commons, Evelyn Denison, gives a special dispensation to allow the manservant to stay in the chamber during sittings. He is opposed to the disestablishment of the (Anglican) Church of Ireland but supports the Landlord and Tenant (Ireland) Act 1870. On losing his seat in 1880, William Ewart Gladstone appoints him to the Bessborough Commission, but he disagrees with its conclusions and publishes his own dissenting report. In 1886, he is made a member of the Privy Council of Ireland.

Kavanagh dies of pneumonia in London at the age of 58 on December 25, 1889. He is buried in Ballicopagan cemetery. He is succeeded in the title of The MacMurrough by his son, Walter MacMurrough Kavanagh, who also serves as MP for County Carlow from 1908 to 1910. The 1901 novel The History of Sir Richard Calmady, written by Lucas Malet (pseudonym of Mary St. Leger Kingsley), is based on his life.

Kavanagh marries his cousin, Mary Frances Forde-Leathley, in 1855. Assisted by his wife, he is a philanthropic landlord, active county magistrate, and chairman of the board of guardians. Together, they have seven children.