Question: Lady Caroline Faber was the daughter of which Conservative British Prime Minister?

Context articles: There is no alternative
Prime Minister's Official Spokesperson
Margaret Thatcher
Lady Caroline Paget
Lady Caroline Howard
Bonar Law
Lady Caroline Faber
Lady Caroline Lamb
Harold Macmillan
Lady Caroline Lamb (film)

There is no alternative (shortened as TINA) was a slogan often used by the Conservative British Prime Minister Margaret Thatcher.
The Prime Minister's Official Spokesperson or alternatively Prime Minister's Official Spokesman/Spokeswoman is a position in the United Kingdom's Civil Service, located in the Prime Minister's Office in 10 Downing Street and used by the British Prime Minister to convey information to the public.
 The Prime Minister's Official Spokesperson usually addresses a small group of press and media correspondents, known as lobby correspondents, each morning to deliver statements on current events on behalf of the Prime Minister.
Margaret Hilda Thatcher, Baroness Thatcher, {'1': ", '2': ", '3': ", '4': "} (née Roberts ; 13 October 1925 – 8 April 2013) was a British stateswoman who was Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990.
 She was the longest-serving British prime minister of the 20th century and the first woman to have been appointed.
 A Soviet journalist dubbed her the "Iron Lady", a nickname that became associated with her uncompromising politics and leadership style.
 As Prime Minister, she implemented policies that have come to be known as Thatcherism.
Caroline, Lady Duff (née Lady Caroline Paget) (15 June 1913 – 22 May 1973) was the daughter of Charles Paget, 6th Marquess of Anglesey and Lady Victoria Manners, eldest daughter of the 8th Duke of Rutland.
 She was born on 15 June 1913, and became the second wife of Sir Michael Duff, 3rd Baronet, on 14 July 1949.
Lady Caroline Howard (1778) is an oil on canvas portrait by Joshua Reynolds.
 Lady Caroline was the daughter of Frederick Howard, 5th Earl of Carlisle, and Margaret Caroline Howard.
 She was a spirited child, according to her father, and was seven years old when she sat to Reynolds.
 The portrait was commissioned by the Earl, and exhibited in 1779 at the Royal Academy before it was hung in Castle Howard.
 Reynolds was a chief proponent of the Grand Manner and, to that end, the roses Lady Caroline plucks from an urn may have been intended to suggest Chastity, Beauty, and Love, the attributes of Venus and the Three Graces.
 The NGA writes "Reynolds has captured some of Lady Caroline's complexity in the serious, intent expression of her attractive face, her averted gaze, and the tension implied in her closed left hand ... the painting is broadly and fluidly executed in thick, opaque layers, with thin translucent glazes in the background."
 National Gallery of Art acquired the portrait in 1937.
Andrew Bonar Law (16 September 1858 – 30 October 1923), commonly called Bonar Law ( ), was a British Conservative Party politician and Prime Minister.
 Born in the British colony of New Brunswick (now in Canada), he is the only British prime minister to have been born outside of the British Isles.
Lady Ann Caroline Faber (29 August 1923 – 14 September 2016) was the daughter of Harold Macmillan (created Earl of Stockton in 1984) and his wife Lady Dorothy Macmillan.
 She was the second of their four children, and their last surviving child.
Lady Caroline Lamb (née Ponsonby; 13 November 1785 – 25 January 1828), known as the Honourable Caroline Ponsonby until her father succeeded to the earldom in 1793, was an Anglo-Irish aristocrat and novelist, best known for her affair with Lord Byron in 1812.
 Her husband was The Hon. William Lamb, who later became Viscount Melbourne and Prime Minister.
 However, she was never the "Viscountess Melbourne" because she died before Melbourne succeeded to the peerage; hence, she is known to history as "Lady" Caroline Lamb.
Maurice Harold Macmillan, 1st Earl of Stockton, {'1': ", '2': ", '3': ", '4': "} (10 February 1894 – 29 December 1986) was a British statesman of the Conservative Party who served as Prime Minister of the United Kingdom from 1957 to 1963.
 Nicknamed "Supermac", he was known for his pragmatism, wit and unflappability.
Lady Caroline Lamb is a 1972 film based on the life of Lady Caroline Lamb, lover of Lord Byron and wife of William Lamb, 2nd Viscount Melbourne (later Prime Minister).
 The film was written and directed by Robert Bolt and starred his wife, Sarah Miles, as Lady Caroline.
 The fim also stars Jon Finch, Richard Chamberlain, Laurence Olivier and Ralph Richardson.