Edgeworth is the son of Richard Edgeworth senior, and great-grandson of Sir Salathiel Lovell through his mother, Jane Lovell, granddaughter of Sir Salathiel. The Edgeworth family comes to Ireland in the 1580s. He is descended from Francis Edgeworth, appointed joint Clerk of the Crown and Hanaper in 1606, who inherits a fortune from his brother Edward Edgeworth, Bishop of Down and Connor.
A Trinity College, Dublin and Corpus Christi College, Oxford alumnus, Edgeworth is credited for creating, among other inventions, a machine to measure the size of a plot of land. He also makes strides in developing educational methods. He anticipates the caterpillar track with an invention that he plays around with for forty years but never successfully develops. He describes it as a “cart that carries its own road.”
Edgeworth is married four times, including both Honora Sneyd and Frances Beaufort, older sister of Francis Beaufort of the Royal Navy. He is the father of 22 children by his four wives. Beaufort and he install a semaphore line for Ireland. He is a member of the Lunar Society of Birmingham. The Lunar Society evolves through various degrees of organization over a period of years, but is only ever an informal group. No constitution, minutes, publications or membership lists survive from any period, and evidence of its existence and activities is found only in the correspondence and notes of those associated with it. Dates given for the society range from sometime before 1760 to it still operating as late as 1813. Fourteen individuals have been identified as having verifiably attended Lunar Society meetings regularly over a long period during its most productive time: these are Matthew Boulton, Erasmus Darwin, Thomas Day, Richard Lovell Edgeworth, Samuel Galton, Jr., James Keir, Joseph Priestley, William Small, Jonathan Stokes, James Watt, Josiah Wedgwood, John Whitehurst and William Withering.
Edgeworth and his family live in Ireland at his estate at Edgeworthstown, County Longford, where he reclaims bogs and improves roads. He sits in Grattan’s Parliament for St. Johnstown (County Longford) from 1798 until the Act of Union 1801, and advocates Catholic Emancipation and parliamentary reform. He is a founder-member of the Royal Irish Academy.
Edgeworth dies in Edgeworthstown on June 13, 1817.
(Pictured: “Portrait of Richard Lovell Edgeworth (1744-1817)” oil on canvas by Hugh Douglas Hamilton)