He belonged to the wealthy Booth family of Salford; he was the son of Robert Booth and Anne Mosley, daughter of Oswald Mosley of Ancoats, Manchester, who was also the ancestor of the prominent twentieth-century politician Sir Oswald Mosley. His father died when Robert was still young and his mother remarried the noted Presbyterian preacher Thomas Case. He was educated at Manchester Grammar School and St. John's College, Cambridge, where he matriculated in 1644. He entered Gray's Inn in 1642 and was called to the bar in 1650; he became an ancient of Gray's Inn in 1662.
Career
He is first heard of in Ireland in the entourage of William Steele, the Lord Chancellor of Ireland, in 1657, and entered the King's Inns the same year. After the Restoration he had the good fortune to attract the favour of Steele's successor, Sir Maurice Eustace. Eustace, a staunch Royalist, was normally hostile to anyone who had been associated with the Cromwellian regime, but he admired Booth's legal ability and believed that his family's wealth would preserve him from any temptation to corruption. Booth was appointed a puisne justice of the Court of Common Pleas in 1660 and its Chief Justice in 1670, by which time he had already begun to suffer from the chronic ill-health which plagued his later years. In 1679 the Chief Justiceship of the Court of King's Bench became vacant. This occurred at the height of the Popish Plot, which created an uncontrollable atmosphere of anti-Catholic hysteria. At this time several Irish judges had open Roman Catholic sympathies, despite the practice of that faith being a bar to public office. Booth had a reputation as a staunch Protestant, and it was probably for that reason that Charles II appointed him Lord Chief Justice, despite objections from James Butler, 1st Duke of Ormonde, the Lord Lieutenant of Ireland, who thought that Booth too extreme in his religious views, and also pointed out that he was almost incapacitated by illness. Ormonde's objections on the second point were fully justified, since Booth died after little more than a year in office. He was buried at Salford.
Personal life
Booth married firstly Mary Potts of Chalgrove, who died in 1660 along with their infant son. He remarried Susanna Oxenden of Deane in Kent, who died in 1669; they had four daughters. His principal residence was at Oxmantown, now near Dublin city centre; Belvedere, his house at Drumcondra, Dublin, is now St. Patrick's College, Drumcondra. The Gore-Booth baronets of Lissadell are related to but not direct descendants of the judge.
