Bogusław Fryderyk Radziwiłł
Bogusław Fryderyk Radziwiłł (3 January 1809 – 2 January 1873) was a Polish nobleman and Prussian military officer and politician.
At the time Poland was partitioned, he lived in the Kingdom of Prussia, where he was a member of the Prussian parliament (later, of the Prussian House of Lords).
He attained the rank of general within the Prussian Army.
His father, Prince Antoni Henryk Radziwiłł, was also the "Duke-Governor"  of the Grand Duchy of Poznań, an autonomous province of the Kingdom of Prussia.
His mother was Princess Louise of Prussia, and through her, he was great-grandson of King Frederick William I of Prussia, great-great-grandson of King George I of Great Britain, cousin of William I, German Emperor and Tsar Alexander II of Russia.
He was the father of Edmund Radziwiłł and Ferdynand Radziwiłł.
Radziwiłł was born in Königsberg and died in Berlin.
Ferdynand Radziwiłł
Ferdynand Fryderyk Radziwiłł( 1834 in Berlin – 1926 in Rome) was a Polish nobleman and Polish- German politician.
He was the son of Bogusław Fryderyk Radziwiłł and Countess Leontyna von Clary und Aldringen.
Through his paternal grandmother, Princess Louise of Prussia, he was a cousin of Russian and German Emperors.
At the time Poland was partitioned, he lived in the German Empire, where he was a member of the German parliament( Reichstag) from 1874 to 1919.
He was known as an important leader of the Polish minority and opponent of the Germanization and Kulturkampf policies.
After Poland regained independence in 1918, he became a Polish citizen and a member of the Polish parliament( Sejm).
Son of: Bogusław Fryderyk Radziwiłł.
Father of: Janusz Franciszek Radziwiłł, Michał Radziwiłł Rudy, Karol Ferdynand Radziwiłł, Małgorzata.
Etan Boritzer
Etan Boritzer( born 1950) is an American writer of children ’s literature who is best known for his book" What is God?" first published in 1989.
His best selling" What is?" illustrated children's book series on character education and difficult subjects for children is a popular teaching guide for parents, teachers and child- life professionals.
Boritzer gained national critical acclaim after" What is God?" was published in 1989 although the book has caused controversy from religious fundamentalists for its universalist views.
The other current books in the" What is?" series include
What is Love?,
What is Death?,
What is Beautiful?,
What is Funny?,
What is Right?,
What is Peace?,
What is Money?,
What is Dreaming?,
What is a Friend?,
What is True?,
What is a Family?,
What is a Feeling?"
The series is now also translated into 15 languages.
Boritzer was first published in 1963 at the age of 13 when he wrote an essay in his English class at Wade Junior High School in the Bronx, New York on the assassination of John F. Kennedy.
His essay was included in a special anthology by New York City public school children compiled and published by the New York City Department of Education.
Boritzer now lives in Venice, California and maintains his publishing office there also.
He has helped numerous other authors to get published through" How to Get Your Book Published!" programs.
Boritzer is also a yoga teacher who teaches regular classes locally and guest- teaches nationally.
He is also recognized nationally as an erudite speaker on" The Teachings of the Buddha."
Marcin Kaczmarek (footballer, born 1974)
Marcin Kaczmarek( born 2 January 1974) is a former Polish footballer and is now a football coach, currently managing Widzew Łódź.
Kaczmarek is the son of Bogusław Kaczmarek who is a retired football manager who last managed for Lechia Gdańsk in 2012.
Pamela Jain
Pamela Jain is an Indian playback singer.
Date of Birth:16th March.
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.
Brian Saunders (weightlifter)
Brian Saunders( date of birth and death unknown) was a male weightlifter who competed for England.
Les Richards
Les Richards( date of birth unknown) was an Australian rules footballer who played with North Melbourne in the Victorian Football League( VFL).
Terence Robinson
Terence D. Robinson( date of birth and death unknown) was a male wrestler who competed for England.
Antoni Radziwiłł
Prince Antoni Henryk Radziwiłł (13 June 1775 – 7 April 1833) was a Polish and Prussian noble, aristocrat, musician and politician.
Initially a hereditary Duke of Nieśwież and Ołyka, as a scion of the Radziwiłł family he also held the honorific title of a "Reichsfürst" of the Holy Roman Empire.
Between 1815 and 1831 he acted as "Duke-Governor"  of the Grand Duchy of Posen, an autonomous province of the Kingdom of Prussia created out of Greater Polish lands annexed in the Partitions of Poland.

Question: When is Bogusław Fryderyk Radziwiłł's father's birthday?
Answer: 13 June 1775