Archduchess Margaret of Austria (nun)
Margaret of Austria( 1536 – 1567) was an Archduchess of Austria.
Ferdinand I, Holy Roman Emperor
Ferdinand I  (10 March 1503 – 25 July 1564) was Holy Roman Emperor from 1556, king of Bohemia and Royal Hungary from 1526, and king of Croatia from 1527 until his death in 1564.
Before his accession, he ruled the Austrian hereditary lands of the Habsburgs in the name of his elder brother, Charles V, Holy Roman Emperor.
Also, he often served as Charles' representative in Germany and developed encouraging relationships with German princes.
The key events during his reign were the contest with the Ottoman Empire, which in the 1520s began a great advance into Central Europe, and the Protestant Reformation, which resulted in several wars of religion.
Ferdinand was able to defend his realm and make it somewhat more cohesive, but he could not conquer the major part of Hungary.
His flexible approach to Imperial problems, mainly religious, finally brought more result than the more confrontational attitude of his brother.
Ferdinand's motto was : "Let justice be done, though the world perish".
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."
Archduke Otto of Austria (1865–1906)
Archduke Otto Franz Joseph Karl Ludwig Maria of Austria (21 April 1865 – 1 November 1906) was the second son of Archduke Karl Ludwig of Austria (younger brother of Emperor Franz Joseph I of Austria) and his second wife, Princess Maria Annunciata of Bourbon-Two Sicilies.
He was the father of Charles I of Austria, the last Emperor of Austria.
Catherine of Austria, Lady of Coucy
Catherine of Austria (9 February 1320 – 28 September 1349) was the oldest daughter of Leopold I, Duke of Austria and his wife Catherine of Savoy.
She was a member of the House of Habsburg by birth and married the Lord of Coucy.
Catherine of Austria, Queen of Poland
Catherine of Austria (15 September 1533 – 28 February 1572) was one of the fifteen children of Ferdinand I, Holy Roman Emperor and Anna of Bohemia and Hungary.
In 1553, she married Polish King Sigismund II Augustus and became Queen consort of Poland and Grand Duchess consort of Lithuania.
Their marriage was not happy and they had no children together.
After a likely miscarriage in 1554 and a bout of illness in 1558, Sigismund became increasingly distant.
He tried but failed to obtain a divorce from the pope.
In 1565, Catherine returned to Austria and lived in Linz until her death.
Sigismund died just a few months after her bringing the Jagiellon dynasty to its end.
Catherine of Bosnia, Grand Princess of Hum
" For other people named Catherine of Bosnia, see Catherine of Bosnia( disambiguation)."
Catherine of Bosnia( Bosnian:" Katarina Kotromanić Stjepanova")( b. 1294- d. 1355) was sister of Stephen II, Ban of Bosnia.
Catherine of Cleves (1417–1479)
Catherine of Cleves (25 May 1417 – 10 February 1479) was Duchess of Guelders by marriage to Arnold, Duke of Guelders.
She acted as regent of Guelders during the absence of her spouse in 1450.
The Hours of Catherine of Cleves was commissioned for her.
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.
Euphrosina Heldina von Dieffenau
Euphrosina Heldina von Dieffenau, or" Heldin"( died 1636), was a Swedish courtier.
Originally from Germany, she became courtier to Catherine of Sweden, Countess Palatine of Kleeburg in 1590.
After the death of Catherine's mother, Maria of the Palatinate- Simmern, she became the lady- in- waiting, nurse and in practice foster mother of Catherine.
She were the confidant of Catherine and the two of them had a close relationship for the rest of their life, sometimes by letters, which are preserved.
She married a German officer in Swedish service, but remained in the service of Catherine also after Catherine's marriage as her Mistress of the Robes.
She was described as educated and seen as a role model for female nobles in this regard, could speak Latin and was given the task to practice reading and prayer with the heir to the throne, Gustav II Adolf of Sweden, and converse with foreign ambassadors.

Question: What is the date of birth of Catherine Of Austria, Queen Of Poland's father?
Answer: 10 March 1503