Héctor Barrantes
Héctor Barrantes Sansoni( 1939–1990) was an Argentine polo player.
He was the stepfather of Sarah, Duchess of York.
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.
Elizabeth de Badlesmere, Countess of Northampton
Elizabeth de Badlesmere, Countess of Northampton( 1313 – 8 June 1356) was the wife of two English noblemen, Sir Edmund Mortimer and William de Bohun, 1st Earl of Northampton.
She was a co-heiress of her brother Giles de Badlesmere, 2nd Baron Badlesmere.
At the age of eight she was sent to the Tower of London along with her mother, Margaret de Clare, Baroness Badlesmere and her four siblings after the former maltreated Queen consort Isabella by ordering an assault upon her and refusing her admittance to Leeds Castle.
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.
Margaret de Vere
Margaret de Vere( died 16 June 1398) was an English noblewoman, a daughter of John de Vere, 7th Earl of Oxford and his wife Maud de Badlesmere.
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.
Maud de Badlesmere, Countess of Oxford
Maud de Badlesmere, Countess of Oxford (1310 – May 1366) was an English noblewoman, and the wife of John de Vere, 7th Earl of Oxford.
She, along with her three sisters, was a co-heiress of her only brother Giles de Badlesmere, 2nd Baron Badlesmere, who had no male issue.
At the age of 11 she was imprisoned in the Tower of London along with her mother, Margaret de Clare, Baroness Badlesmere and her four siblings, after the former refused Queen consort Isabella admittance to Leeds Castle and ordered an assault upon her when she attempted entry.
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.
Thomas de Vere, 8th Earl of Oxford
Thomas de Vere, 8th Earl of Oxford( c. 1336 – September 1371) was the second son of John de Vere, 7th Earl of Oxford, and Maud de Badlesmere.
He was predeceased by his elder brother, Sir John Vere of Whitchurch, Buckinghamshire, who married Elizabeth de Courtenay, the daughter of Hugh de Courtenay, 10th Earl of Devon, and died before 23 June 1350 without issue.
Thomas took part in several of the military campaigns of Edward III.
He married, Sometime before 10 June 1350, Maud de Ufford, daughter and heir of Sir Ralph de Ufford and Maud of Lancaster, the daughter of Henry of Lancaster, grandson of King Henry III.
After Thomas ’s death, his widow was indicted for involvement in a plot against King Henry IV, but was later pardoned.
When Thomas died in 1371, he was succeeded by his only son, Robert de Vere, 9th Earl of Oxford.
Margaret de Clare, Baroness Badlesmere
Margaret de Clare, Baroness Badlesmere (ca. 1 April 1287 – 22 October 1333/
January 1334, disputed) was a Norman-Irish noblewoman, "suo jure" heiress, and the wife of Bartholomew de Badlesmere, 1st Baron Badlesmere.
She was arrested and subsequently imprisoned in the Tower of London for the duration of a year from November 1321 to November 1322, making her the first recorded female prisoner in the Tower's history.
She was jailed on account of having ordered an armed assault on Isabella of France, Queen consort of King Edward II of England.
Before Margaret had instructed her archers to fire upon Isabella and her escort, she had refused the Queen admittance to Leeds Castle where her husband, Baron Badlesmere held the post of governor, but which was legally the property of Queen Isabella as part of the latter's dowry.
Margaret surrendered the castle on 31 October 1321 after it was besieged by the King's forces using ballistas.
Edward's capture of Leeds Castle was the catalyst which led to the Despenser War in the Welsh Marches and the north of England.
Upon her release from the Tower, Margaret entered a religious life at the convent house of the Minorite Sisters outside Aldgate.
King Edward granted her a stipend to pay for her maintenance.

Question: Who is the father of Maud De Badlesmere, Countess Of Oxford?