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.
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.
Anne of Bohemia (1290–1313)
Anne of Bohemia( 1290 –1313) was the eldest surviving daughter of Wenceslaus II of Bohemia and Poland and his first wife Judith of Habsburg.
Her siblings included Elisabeth of Bohemia and Wenceslaus III of Bohemia.
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.
Nicholas I, Duke of Troppau
Nicholas I  (c. 1255 – 25 July 1318) was the natural son of Bohemian king Ottokar II Přemysl and his mistress Agnes of Kuenring.
In 1269 he became Duke of Opava (at modern day Opava, Czech Republic) and thereby the progenitor of the Silesian cadet branch of the Přemyslid dynasty that lasted until 1521.
He was legitimated by his father with the consent of Pope Urban IV and raised at the Prague court.
As his half-brother Wenceslaus II was designated to succeed his father on the Bohemian throne, Nicholas in compensation received Troppau, then a part of the Moravian march.
He supported his father in the 1278 Battle on the Marchfeld, was captured by Hungarian forces, but regained his duchy from the victorious German king Rudolph of Habsburg.
His rule was however challenged by Ottokar's widow Kunigunda Rostislavna, who had retired to Hradec nad Moravicí.
In 1283 Nicholas married King Rudolph's niece Adelheid.
They had three sons:
Nicholas retained the Duchy of Opava after the last Přemyslid ruler of Bohemia, King Wenceslaus III was killed in 1306.
The Bohemian Crown however passed to Duke Henry of Carinthia and Nicholas had to accept the pledge of his duchy in favour of the Silesian Piast duke Bolesław III the Generous of Legnica, the husband of King Wenceslaus' III sister Margaret.
King Henry's successor John of Luxembourg however redeemed the pawn and in 1318 re-installed Nicholas's son Nicholas II as duke.
Margaret of Bohemia, Duchess of Bavaria
Margaret of Bohemia( 1313–1341) was the daughter of King John of Bohemia by his first wife Elisabeth of Bohemia( 1292–1330).
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.
Agnes of Kuenring
Agnes of Kuenring (ca.
1236 - fl.
1261), was an Austrian noble, courtier of Queen Margaret of Austria and mistress of her spouse, King Ottokar II of Bohemia.
She was the first historically documented mistress of a Bohemian sovereign.
Héctor Barrantes
Héctor Barrantes Sansoni( 1939–1990) was an Argentine polo player.
He was the stepfather of Sarah, Duchess of York.
William Curti
Cardinal William Curti was an official of the Catholic Church who was involved in religious and academic censure at the University of Paris, in the late 14th century.
He is best remembered as the cardinal who presided at the trial of Nicholas of Autrecourt.
The trial concerned the suspect views of Nicholas of Autrecourt pertaining to the immortality of the soul.
The positive philosophy of Nicholas of Autrecourt conflicted with some points of Catholic theology.
The report of the inquiry is most often referred to as" The Articles of Cardinal Curti".
On May 19, 1346 Nicholas of Autrecourt was sentenced to burn his writings in Paris, France.

Question: Who is the father of Nicholas I, Duke Of Troppau?
Answer: Ottokar II of Bohemia