Question: Who was Nicholas II of Russia's father?

Context paragraphs:
Rose Trellis (Fabergé egg): The Rose Trellis Fabergé egg is a jewelled enameled imperial Easter egg made in Saint Petersburg, Russia under the supervision of the jeweler Peter Carl Fabergé in 1907, for Tsar Nicholas II of Russia.  It was presented by Tsar Nicholas II to his wife, the Empress Alexandra Fyodorovna, on Easter (April 22) 1907.  It is now in the Walters Art Museum in Baltimore, Maryland.

Nicholas II, Duke of Opava: Nicholas II of Opava (also: "Nicholas II of Troppau", "Nicholas II of Ratibór"; ; 1288 – 8 December 1365) was Duke of Opava (German: "Troppau" ) from 1318 to 1365 and Duke of Ratibór from 1337 to 1365 and Burgrave of Kladsko (German: "Glatz" ) from 1350 to 1365 and also chamberlain of the Kingdom of Bohemia.

Twelve Monograms (Fabergé egg): The Twelve Monograms egg, also known as the Alexander III Portraits egg, is a Easter egg made under the supervision of the Russian jeweller Peter Carl Fabergé in 1896 for Tsar Nicholas II of Russia.  It was presented by Nicholas II to his mother, the Dowager Empress Maria Feodorovna.  The egg was the second Fabergé egg ever given by Nicholas II to his mother as an Easter present.

Maria Feodorovna (Dagmar of Denmark): Maria Feodorovna (26 November 1847 – 13 October 1928), born Princess Dagmar of Denmark, was a Danish princess and Empress of Russia as spouse of Emperor Alexander III (reigned 1881–1894).  She was the second daughter of King Christian IX of Denmark and Louise of Hesse-Kassel; her siblings included Queen Alexandra of the United Kingdom, King Frederick VIII of Denmark and King George I of Greece.  Her eldest son became the last Russian monarch, Emperor Nicholas II of Russia, whom she outlived by ten years.

Alexander III Commemorative (Fabergé egg): The Alexander III Commemorative egg is a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Fabergé in 1909, for Nicholas II of Russia, who presented it to his mother, the Dowager Empress Maria Feodorovna.

Princess Vera Constantinovna of Russia: Princess Vera Constantinovna of Russia, also Vera Konstantinovna (Russian: Вера Константиновна Романова ; 24 April 1906 – 11 January 2001), was the youngest child of Grand Duke Konstantine Konstantinovich of Russia and his wife, Grand Duchess Elizabeth Mavrikievna.  A great-granddaughter of Tsar Nicholas I of Russia, she was born in the Russian Empire and was a childhood playmate of the younger children of Emperor Nicholas II of Russia.  She lost much of her family during World War I and the Russian Revolution.  At age twelve, she escaped revolutionary Russia, fleeing with her mother and brother George to Sweden.  She spent the rest of her long life in exile, first in Western Europe and from the 1950s in the United States.

Red Cross with Triptych (Fabergé egg): The Red Cross with Triptych egg, also known as Red Cross Triptych Egg or Red Cross Egg with Resurrection Triptych, is an enameled Easter egg made under the supervision of the Russian jeweler Peter Carl Fabergé in 1915, for Nicholas II of Russia.  Nicholas II presented it to his wife Empress Alexandra Fyodorovna on Easter 1915.

Gatchina Palace (Fabergé egg): The Gatchina Palace egg is a jewelled, enameled Easter egg made under the supervision of the Russian jeweler Peter Carl Fabergé in 1901, for Nicholas II of Russia.  Nicholas II presented it to his mother, the Dowager Empress Maria Feodorovna, at Easter in 1901.  The egg opens to reveal a surprise miniature gold replica of the palace at Gatchina (a town south of St. Petersburg) that was built for Count Grigory Orlov and was later acquired by Tsar Paul I.  It is one of two imperial Easter eggs in the collection of the Walters Art Museum in Baltimore, Maryland.

Steel Military (Fabergé egg): The Steel Military egg is one of a series of approximately 50 Russian jewelled Easter eggs created under the supervision of the Russian jeweller Peter Carl Fabergé.  This particular egg was delivered to Alexandra Fyodorovna, the Russian Tsarina, on Easter Eve of 1916 on behalf of the last Tsar of Russia, Nicholas II by Fabergé's son Eugène while Nicholas II was away at the Russian front of World War I; Carl Fabergé was himself busy delivering the other Easter egg for 1916, the Order of St. George Egg, to Nicholas's mother, the Dowager Empress Maria.  It is one of only ten Imperial eggs that were not sold following the Russian Revolution and subsequent execution of the immediate Imperial Romanov family, and is now held in the collection of the Kremlin Armoury.

Charles Sydney Gibbes: Charles Sydney Gibbes (19 January 1876 – 24 March 1963) was a British academic who from 1908 to 1917 served as the English tutor to the children of Emperor Nicholas II of Russia.  When Nicholas abdicated the throne in March 1917 Gibbes voluntarily accompanied the Imperial family into exile to the Siberian village of Tobolsk.  After the family was murdered in 1918 Gibbes returned to the United Kingdom and eventually became an Orthodox monk, adopting the name of "Nicholas" in commemoration of Nicholas II.  He died in 1963, and is buried at Headington cemetery, Oxford, Oxfordshire, England.

Supporting paragraphs: Alexander III Commemorative (Fabergé egg) Maria Feodorovna (Dagmar of Denmark)
Answer: Emperor Alexander III