At Peterhouse, Cambridge, Cosgrave switched from "Paddy" to "Patrick",[4] and earned a doctorate in history from Cambridge University.[2] His supervisor was Herbert Butterfield, whom he later described as "the greatest influence on my life I can define".[6] He was among the Peterhouse alumni nicknamed "the reactionary chic" by the New Statesman.[6]
When Thatcher first saw him speaking on television, she reportedly dismissed him as a "typical upper-classpublic school twit", to his obvious delight.[6] In 1975, he became her advisor while she was Leader of the Opposition.[2][6] He seemed on the path to a safe seat in Parliament, and ultimately a cabinet post.[6] However, Thatcher dropped him after winning power in the 1979 general election,[2] by which time his heavy drinking was impairing his reliability.[1][3]Private Eye suggested Thatcher dropped him because he had vomited on her in a taxi,[1] though the story is disputed.[3]
Cosgrave's first book was a review of the poetry of Robert Lowell.[9]Martin Seymour-Smith derided the book, but Lowell agreed with Cosgrave's criticism of "Mr Edwards and the Spider", and dedicated a rewritten version to him.[9]
His 1978 biography of Margaret Thatcher was faulted for hero worship;[3]George Gale called it "not much above a hagiography".[1] His biography of Enoch Powell, whom he also admired, was made with access to Powell and his correspondence,[1] and was the work of which he was most proud.[2] He completed only the first volume of a planned two-volume study of Winston Churchill during World War II.[10]
He published three mystery novels featuring the daring Colonel Allen Cheyney.[11]
Personal life
He obtained a British passport[2] and sometimes attended services of the Church of England, while remaining agnostic.[2][5] In contrast to his public image as a vigorous polemicist, he was considered kind and courteous in private.[1][3][5]
He married three times and divorced twice.[1][3] His first marriage in 1965 was to Ruth Dudley Edwards, a fellow student at UCD and, later, Cambridge.[6][12] He married Norma Green, mother of his daughter Rebecca, in 1974; and Shirley Ward, his widow, in 1981;[1][3] she was secretary of the European Democrats at the European Parliament.[4]
He had financial problems from the late 1970s and when Green left him in 1980, Rebecca was made a ward of court.[13] In 1981 the Inland Revenue filed a tax demand for over £10,000 and he was declared bankrupt.[13] His debt of £18,700 was discharged in 1985.[13]
He died of heart failure.[4] His poor health was exacerbated by heavy drinking and smoking.[2][3]