Héctor Barrantes
Héctor Barrantes Sansoni( 1939–1990) was an Argentine polo player.
He was the stepfather of Sarah, Duchess of York.
Zara Tindall
Zara Anne Elizabeth Tindall (née Phillips; born 15 May 1981) is a member of the British royal family, an equestrian and Olympian.
She is the daughter of Princess Anne and Mark Phillips and the eldest granddaughter of Queen Elizabeth II.
Tindall won the Eventing World Championship in Aachen in 2006.
The same year she was voted 2006 BBC Sports Personality of the Year by the British television viewing public (an award her mother won in 1971).
She was appointed Member of the Order of the British Empire (MBE) in the 2007 New Year Honours for her services to equestrianism.
In 2012, she carried an Olympic flame at Cheltenham Racecourse on her horse Toytown.
As a member of the Great Britain Eventing Team, she won a silver medal at the 2012 Summer Olympics, presented to her by her mother.
At birth, she was sixth in line of succession to the British throne.
She is now 18th in line.
Charles Williams, Baron Williams of Elvel
Charles Cuthbert Powell Williams, Baron Williams of Elvel,( born 9 February 1933) is a retired business executive and a Labour peer.
In his 20s he played first- class cricket while at university and for several seasons afterwards.
He is the stepfather of Justin Welby, the Archbishop of Canterbury.
Albert Visetti
Albert Anthony Visetti( 13 May 1846–10 July 1928) was a Dalmatian musician who moved to London where he was Professor of Singing at the Royal College of Music, becoming a Fellow in 1921.
He was the stepfather of the novelist Radclyffe Hall.
Albert E. Austin
Albert Elmer Austin( November 15, 1877 – January 26, 1942) was a Republican member of the United States House of Representatives from 1939 to 1941 and member of the Connecticut House of Representatives from 1917 to 1919 and from 1921 to 1923.
He was the stepfather of Clare Boothe Luce.
Lolo Soetoro
Lolo Soetoro
( EYD: Lolo Sutoro;; 2 January 1935 – 2 March 1987), also known as Lolo Soetoro Mangunharjo or Mangundikardjo, of Indonesia was the stepfather of Barack Obama, the 44th President of the United States.
Jerrold Wexler
Jerrold Wexler( June 27, 1924 – November 10, 1992) was a noted American businessman and film producer.
He was the brother of cinematographer Haskell Wexler and the stepfather of actress Daryl Hannah.
Morris Harvey
Morris Harvey( 1877– 1944) was a British actor and writer.
A renowned character actor, he also wrote for the stage, including material for Broadway revues, in which he also appeared.
He was the stepfather of film director Anthony Harvey.
Anne, Princess Royal
Anne, Princess Royal, (Anne Elizabeth Alice Louise; born 15 August 1950) is the second child and only daughter of Queen Elizabeth II and Prince Philip, Duke of Edinburgh.
At the time of her birth, she was third in the line of succession to the British throne, behind her mother – then Princess Elizabeth – and older brother, Charles.
She rose to second after her mother's accession but is 14th in line .
Anne is known for her charitable work and is a patron of over 200 organisations.
She is also known for her equestrian talents; she won two silver medals (1975) and one gold medal (1971) at the European Eventing Championships, and she is the first member of the British Royal Family to have competed in the Olympic Games.
Princess Anne has held the title of "Princess Royal" since 1987 and is its seventh holder.
Anne was married to Captain Mark Phillips in 1973; they divorced in 1992.
They have two children and four grandchildren.
In 1992, within months of her divorce, Anne married Commander (now Vice Admiral)
Sir Timothy Laurence, whom she had met while he served as her mother's equerry between 1986 and 1989.
Since 2012, she has held the rank of Admiral and Chief Commandant of Women in the Royal Navy.
Gerald Rudolff Ford
Gerald Rudolff Ford( December 9, 1890 – January 26, 1962) was an American businessman, creator of Ford Industries, and Republican politician who was the stepfather of U.S. President Gerald Ford and for whom Ford legally changed his name.

Question: Who is the stepfather of Zara Tindall?