Mary Archer evidence at the High Court in a libel case brought by her husband against the "Daily Star" newspaper, which claimed Jeffrey had slept with a prostitute called Monica Coghlan. During his summing up at the end of the trial, the judge, Mr Justice Caulfield, asked: "Has she elegance? Has she fragrance? Would she have, without the strain of this trial, radiance?" In 2001, when Jeffrey Archer was accused of having committed perjury in the 1987 trial, she appeared at the Old Bailey to defend him. Jeffrey Archer was subsequently convicted and imprisoned for perjury and perverting the course of justice.
Jeffrey Archer "the financial involvement of a controversial and internationally famous member of the British House of Lords in the plot, backed up by banking records." He claimed documents from the bank accounts in Guernsey of two companies Mann used as vehicles for organising the coup, showed a 'J H Archer' paying $135,000 into one of the firms. Archer has been married to Mary Weeden since July 1966. They met at Oxford University, where Weeden was studying chemistry at St Anne's College. She went on to specialise in solar power. They have two children: William Archer (born 1972), a theatre producer, and