Agnes of Leiningen
Agnes of Leiningen( died after December 1299) was a countess of the House of Leiningen and by marriage Countess of Nassau.
She was probably Regent of the County of Nassau for some time for her youngest son.
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.
Prince Karl of Leiningen
Prince Karl Vladimir Ernst Heinrich of Leiningen (2 January 1928 – 28 September 1990) was the younger son of Karl, 6th Prince of Leiningen (1898–1946) and Grand Duchess Maria Kirillovna of Russia.
Maria was the daughter of Princess Victoria Melita of Edinburgh and Saxe-Coburg-Gotha and Cyril Vladimirovich, Grand Duke of Russia.
As such, Karl was a great-great-grandson of both Queen Victoria of Great Britain and Emperor Alexander II of Russia (as Victoria Melita and Cyril Vladimirovich were both grandchildren of Alexander II).
Karl, Prince of Leiningen
Karl, Prince of Leiningen( 13 February 18982 August 1946) was the son of Emich, 5th Prince of Leiningen.
He was the 6th Prince of Leiningen from 1939 until his death.
Emich, 5th Prince of Leiningen
Emich, 5th Prince of Leiningen( 18 January 1866 – 18 July 1939) was the son of Ernst Leopold, 4th Prince of Leiningen.
He was 5th Prince of Leiningen from 1904 to 1918, and afterwards titular Prince of Leiningen from 1918 until his death.
Carl Friedrich Wilhelm, 1st Prince of Leiningen
Carl Friedrich Wilhelm, Prince of Leiningen( 14 August 1724 – 9 January 1807) was a German nobleman.
( See" Fürst" for the difference between it and the other princely title," Prinz".)
He was the eldest son of Friedrich Magnus, Count of Leiningen- Dagsburg- Hartenburg and his wife Countess Anna Christine Eleonore von Wurmbrand- Stuppach, and succeeded his father on the latter's death, 28 October 1756.
On 3 July 1779, he was made a Prince of the Holy Roman Empire, becoming the first Prince of Leiningen.
On 24 June 1749, he married his first cousin Christiane Wilhelmine Luise, daughter of Wilhelm Carl Ludwig, Count of Solms- Rödelheim and Assenheim, by his wife Countess Maria Margareta Leopolda von Wurmbrand- Stuppach.
She died on 6 January 1803, having borne him a son and three daughters:
In 1801, he was deprived of his lands on the left bank of the Rhine, namely Hardenburg, Dagsburg and Durkheim, by France, but in 1803 received the secularized Amorbach Abbey as an ample compensation for these losses.
Hitherto his titles were:" Imperial Prince of Leiningen, Count palatine of Mosbach, Count of Düren, Lord of Miltenberg, Amorbach, Bischofsheim, Boxberg, Schüpf and Lauda.
A few years later, the short- lived Principality of Leiningen at Amorbach was mediatized.
Emich Christian of Leiningen-Dagsburg
Emich Christian of Leiningen- Dagsburg( 29 March 1642, in Dagsburg – 27 April 1702) was, by descent, Count of Leiningen and Dagsburg and, by inheritance, Lord of Broich, Oberstein and Bürgel.
Prince Boris of Leiningen
Prince Karl "Boris" Frank Markwart of Leiningen (born 17 April 1960) is the elder son of Prince Karl of Leiningen and of his wife, Princess Marie Louise of Bulgaria.
As a third great-grandson of Queen Victoria, he is in the line of succession to the throne of Canada and those of the other Commonwealth realms.
Andreas, Prince of Leiningen
Andreas, Prince of Leiningen ("Andreas Fürst zu Leiningen"; born 27 November 1955) is the current head of the Princely House of Leiningen.
He is the son of Emich Kyrill, Prince of Leiningen, and Duchess Eilika of Oldenburg.
His older brother Prince Karl Emich of Leiningen lost his rights to succeed as head of the house as a result of his unequal second marriage.
His paternal grandmother, Grand Duchess Maria Kirillovna of Russia, was the eldest daughter of Kirill Vladimirovich, Grand Duke of Russia (first claimant to the throne of Russia and a grandson of Alexander II of Russia) and Princess Victoria Melita of Edinburgh (granddaughter of Alexander II of Russia).
Because of this, he is in the line of succession to the former Russian throne.
His great-great-great grandfather, Carl Friedrich Wilhelm Emich, 3rd Prince of Leiningen, was the elder half-brother of Queen Victoria.
Through his father, he is also a direct descendant (specifically a great-great-great-grandson) of Queen Victoria, through her granddaughter, Princess Victoria Melita of Edinburgh, whose second husband was Grand Duke Kirill Vladimirovich.
Because of this, he is in the line of succession to the British Throne.
He married Princess Alexandra of Hanover on 5 October 1981.
They have three children:
Princess Feodora of Leiningen
Princess Feodora of Leiningen (Anna Feodora Auguste Charlotte Wilhelmine; 7 December 1807 – 23 September 1872) was the only daughter of Emich Carl, Prince of Leiningen (1763–1814), and Princess Victoria of Saxe-Coburg-Saalfeld (1786–1861).
Feodora and her older brother Carl, 3rd Prince of Leiningen, were maternal half-siblings to Queen Victoria of the United Kingdom.
She is a matrilineal ancestress of Carl XVI Gustaf of Sweden and of Felipe VI of Spain.

Question: What is the date of death of Prince Boris Of Leiningen's father?
Answer: 28 September 1990