Rudolf of Żagań
Rudolf of Żagań  (ca. 1418 – 18 September 1454) was a Duke of Żagań-Przewóz since 1439 (with his brothers as co-rulers until 1449), from 1449 Duke of Żagań (as co-ruler of his older brother).
He was the second son of Duke Jan I of Żagań by his wife Scholastika, daughter of Rudolf III, Duke of Saxe-Wittemberg and Elector of Saxony.
He was named after his maternal grandfather.
Bertha of Rheinfelden
Bertha of Rheinfelden( also Bertha of Bregenz)( b.c. 1065; d. after 1128), countess of Kellmünz, was the daughter of Rudolf of Rheinfelden and wife of Ulrich X of Bregenz.
Jan I of Żagań
Jan I of Żagań  (– 12 April 1439) was a Duke of Żagań-Głogów, since 1397 (until 1412 with his brothers as co-rulers), since 1403 Duke of Żagań, Krosno Odrzańskie and Świebodzin (again, until 1412 with his brothers as co-rulers) and since 1412 sole ruler of Żagań and Przewóz.
He was the eldest son of Henry VIII the Sparrow, Duke of Głogów by his wife Katharina, daughter of Duke Władysław of Opole.
Thomas Scott (diver)
Thomas Scott( 1907- date of death unknown) was an English diver.
Agnes of Rheinfelden
Agnes of Rheinfelden(*; † 19 December 1111) was the daughter of Rudolf of Rheinfelden, and the wife of Berthold II of Zähringen.
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."
Jan II the Mad
Jan II the Mad also known as the Bad, the Wild or the Cruel( 16 April 1435 – 22 September 1504), was a Duke of Żagań- Przewóz since 1439( with his brothers as co-rulers until 1449), from 1449 Duke of Przewóz( as co-ruler of his younger brother), during 1461 – 1468 and briefly in 1472 Duke of Żagań and during 1476 – 1488 Duke of half- Głogów( the Duchy was finally reunited in 1480).
He was the fourth and youngest son of Duke Jan I of Żagań by his wife Scholastika, daughter of Rudolf III, Duke of Saxe- Wittenberg and Elector of Saxony.
Balthasar of Żagań
Balthasar, Duke of Żagań( – Przewóz, 15 July 1472), was a Duke of Żagań- Przewóz since 1439( with his brothers as co-rulers until 1449), from 1449 Duke of Żagań.
Deposed during 1461 – 1468, he recovered the Duchy in this year until shortly before his death.
He was the oldest son of Duke Jan I of Żagań by his wife Scholastika, daughter of Rudolf III, Duke of Saxe- Wittemberg and Elector of Saxony.
He was named after his maternal great- grandfather, Balthasar, Landgrave of Thuringia( Scholastika's maternal grandfather).
Wenceslaus of Żagań
Wenceslaus of Żagań( ca. 1434 – 29 April 1488) was a Duke of Żagań- Przewóz since 1439( with his brothers as co-rulers until 1449), from 1449 Duke of Przewóz( as co-ruler of his younger brother).
He was the third son of Duke Jan I of Żagań by his wife Scholastika, daughter of Rudolf III, Duke of Saxe- Wittemberg and Elector of Saxony.
His uncle, Joe II of Żagań, was his guiding mentor through childhood.
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.

Question: What is the date of death of Rudolf Of Żagań's father?
Answer: 12 April 1439