Question: The second in line of succession to the British throne, after his father was the patron of what?

Context articles: Duchess Eilika of Oldenburg
Prince Nikola of Yugoslavia (born 1958)
Princess Eleonore of Schaumburg-Lippe
Prince Christian of Hanover (born 1985)
Succession to the Crown Act 2013
Succession to the British throne
Prince Richard, Duke of Gloucester
Prince William, Duke of Cambridge
Amanda Pullinger
Sarah, Duchess of York

Duchess Eilika of Oldenburg (née Duchess Eilika Helene Jutta Clementine of Oldenburg) (born 22 August 1972) is the wife of Georg von Habsburg, the third in the line of succession to the former Austro-Hungarian throne.
 She was in line of succession to the British throne before her marriage to a Roman Catholic.
 She is a daughter of Duke Johann of Oldenburg and his wife Countess Ilka of Ortenburg.
 Her father is a younger son of Nikolaus, Hereditary Grand Duke of Oldenburg and his wife Princess Helena of Waldeck and Pyrmont.
Prince Nikolas of Yugoslavia (born 15 March 1958) is a member of the House of Karadordevic.
 Currently fourth in the line of succession to the defunct Yugoslavian throne, he is also in the line of succession to the British throne as a great-grandson of Princess Marie of Edinburgh, herself a granddaughter of Victoria of the United Kingdom.
Princess Eleonore-Christine of Schaumburg-Lippe (Eleonore-Christine Eugenie Benita Feodora Maria; born 22 December 1978 at Hørsholm, Denmark) is the daughter of Prince Waldemar of Schaumburg-Lippe and his first wife, Anne-Lise Johansen.
 Princess Eleonore-Christine is a great-great-granddaughter of King Frederick VIII of Denmark.
 Under Danish law, she is barred from succession to the Danish throne, as she is not a descendant of Christian X.
 However, through her father, she is a descendant of King George II of Great Britain, and is therefore in line for the British throne.
Prince Christian of Hanover (Christian Heinrich Clemens Paul Frank Peter Welf Wilhelm-Ernst Friedrich Franz Prince of Hanover, Duke of Brunswick and Lüneburg; born 1 June 1985) is the younger son of Ernst August, Prince of Hanover, and his first wife Chantal Hochuli.
 He is the second in the line of succession to the former Hanoverian throne, after his elder brother Prince Ernst August.
 As a descendant of George III of the United Kingdom, Christian is also in the line of succession to the British throne.
The Succession to the Crown Act 2013 (c. 20) is an Act of the Parliament of the United Kingdom.
 It altered the laws of succession to the British throne in accordance with the 2011 Perth Agreement.
 The act replaced male-preference primogeniture with absolute primogeniture for those born in the line of succession after 28 October 2011, which meant the eldest child regardless of gender would precede his or her siblings.
 The act also ended the disqualification of a person who married a Roman Catholic from the line of succession, and removed the requirement of those outside the first six persons in line to the throne to seek the Sovereign's approval to marry.
 It was brought into force on 26 March 2015, at the same time as the other Commonwealth realms implemented the Perth Agreement in their own laws.
Succession to the British throne is determined by descent, gender (for people born before October 2011), legitimacy, and religion.
 Under common law, the Crown is inherited by a sovereign's children or by a childless sovereign's nearest collateral line.
 The Bill of Rights 1689 and the Act of Settlement 1701, restrict succession to the throne to the legitimate Protestant descendants of Sophia of Hanover that are in "communion with the Church of England".
 Spouses of Roman Catholics were disqualified from 1689 until the law was amended in 2015.
 Protestant descendants of those excluded for being Roman Catholics are eligible.
Prince Richard, Duke of Gloucester, {'1': ", '2': ", '3': ", '4': "} (Richard Alexander Walter George; born 26 August 1944) is the youngest grandchild of King George V and Queen Mary.
 He practised as an architect until the death of his elder brother placed him in direct line to inherit his father's dukedom of Gloucester, which he inherited, as the second duke, in 1974.
 He is currently 24th in the line of succession to the British throne.
 He is also the senior male line descendant of three British monarchs: Victoria, Edward VII and George V .
Prince William, Duke of Cambridge, {'1': ", '2': ", '3': ", '4': "} (William Arthur Philip Louis; born 21 June 1982) is the elder son of Charles, Prince of Wales, and Diana, Princess of Wales.
 He is second in the line of succession to the British throne, after his father.
Amanda Pullinger is the Chief Executive Officer of 100 Women in Finance, formerly 100 Women in Hedge Funds.
 Ms. Pullinger has led the organization in its growth from a few hundred members in New York to more than 15,000 members in 21 cities globally.
 100 Women launched its new name and branding at the Closing Bell of the NYSE on December 14, 2016 In 2009, she succeeded in bringing in Britain’s Prince William, Duke of Cambridge as the Patron of 100 Women in Hedge Funds.
 Ms. Pullinger welcomed The Duke and Duchess of Cambridge to the 100WHF's London Gala in 2011.
 In late 2012, it was announced that the Duke and Duchess of Cambridge, and Prince Harry would all be Patrons of 100WHF's Philanthropic Initiatives beginning in January 2013.
 In October 2013, a day after the Royal Christening of Prince George, Ms. Pullinger welcomed HRH The Duchess of Cambridge to 100WHF's London Gala for the benefit of Action on Addiction.
 She then welcomed HRH The Duchess of Cambridge to 100WHF's 2015 Gala in London for the benefit of The Art Room.
Sarah, Duchess of York (Sarah Margaret; "née" Ferguson; born 15 October 1959) is a British writer, charity patron, public speaker, film producer and television personality.
 She is the former wife of Prince Andrew, Duke of York, the second son of Queen Elizabeth II and Prince Philip, Duke of Edinburgh.
 She is the younger daughter of Major Ronald Ferguson and Susan Barrantes (née Wright).
 Sarah has two daughters, Princesses Beatrice and Eugenie of York, who are respectively seventh and eighth in the line of succession to the British throne.