Henry, Duke of Cornwall
Henry, Duke of Cornwall (1 January – 22 February 1511) was the first child of King Henry VIII of England and his first wife, Catherine of Aragon, and though his birth was celebrated as that of the heir apparent, he died within weeks.
His death and Henry VIII's failure to produce another surviving male heir with Catherine led to succession and marriage crises that affected the relationship between the English church and Roman Catholicism, giving rise to the English Reformation.
Richard Wesley, 1st Baron Mornington
Richard Colley Wesley, 1st Baron Mornington (– 31 January 1758) was an Irish peer, best remembered as the grandfather of Arthur Wellesley, 1st Duke of Wellington.
Charles, Duke of Guise
Charles de Lorraine, 4th Duke of Guise( 2 August 1571 – 30 September 1640) was the son of Henry I, Duke of Guise and Catherine of Cleves.
Louis III, Cardinal of Guise
Louis de Lorraine known as the" Cardinal de Guise"( 22 January 1575 – 21 June 1621, Saintes) was the third son of Henry I, Duke of Guise and Catherine of Cleves.
Frederick IV of Liegnitz
Frederick IV, Duke of Legnica( 20 April 1552 – 27 March 1596) was Duke of Legnica since 1571 until his death( as a co-ruler of his elder brother during 1571 – 1576 and 1580 – 1581).
He was the third but second surviving son of Frederick III, Duke of Liegnitz, by his wife Katharina, daughter of Henry V, Duke of Mecklenburg.
He was named after his brother Frederick, who died in 1551, one year before his birth.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
Henry Wentworth
Sir Henry Wentworth of Nettlestead, Suffolk, KB( born c. 1448 – died between 17 August 1499 and 27 February 1501)," de jure" 4th Baron le Despencer, was the grandfather of Henry VIII's third wife, Jane Seymour, and the great- grandfather of Jane's son, Edward VI.
Catherine of Aragon
Catherine of Aragon (16 December 1485 – 7 January 1536) was Queen of England from June 1509 until May 1533 as the first wife of King Henry VIII; she was previously Princess of Wales as the wife of Henry's elder brother, Arthur.
The daughter of Isabella I of Castile and Ferdinand II of Aragon, Catherine was three years old when she was betrothed to Arthur, Prince of Wales, heir apparent to the English throne.
They married in 1501, but Arthur died five months later.
She held the position of ambassador of the Aragonese Crown to England in 1507, the first female ambassador in European history.
Catherine subsequently married Arthur's younger brother, the recently ascended Henry VIII, in 1509.
For six months in 1513, she served as regent of England while Henry VIII was in France.
During that time the English won the Battle of Flodden, an event in which Catherine played an important part with an emotional speech about English courage.
By 1525, Henry VIII was infatuated with Anne Boleyn and dissatisfied that his marriage to Catherine had produced no surviving sons, leaving their daughter, the future Mary I of England, as heir presumptive at a time when there was no established precedent for a woman on the throne.
He sought to have their marriage annulled, setting in motion a chain of events that led to England's schism with the Catholic Church.
When Pope Clement VII refused to annul the marriage, Henry defied him by assuming supremacy over religious matters.
In 1533 their marriage was consequently declared invalid and Henry married Anne on the judgement of clergy in England, without reference to the Pope.
Catherine refused to accept Henry as Supreme Head of the Church in England and considered herself the King's rightful wife and queen, attracting much popular sympathy.
Despite this, she was acknowledged only as Dowager Princess of Wales by Henry.
After being banished from court by Henry, she lived out the remainder of her life at Kimbolton Castle, and died there on 7 January 1536 of cancer.
English people held Catherine in high esteem, and her death set off tremendous mourning.
"The Education of a Christian Woman" by Juan Luis Vives, controversial at its release for promoting that women have the right to an education, was commissioned by and dedicated to her in 1523.
Such was Catherine's impression on people that even her enemy, Thomas Cromwell, said of her, "If not for her sex, she could have defied all the heroes of History."
She successfully appealed for the lives of the rebels involved in the Evil May Day, for the sake of their families.
Catherine also won widespread admiration by starting an extensive programme for the relief of the poor.
She was a patron of Renaissance humanism, and a friend of the great scholars Erasmus of Rotterdam and Thomas More.
Henry XI of Legnica
Henry XI of Legnica( Schloss Liegnitz, 23 February
1539 – Krakow, 3 March 1588), was a thrice Duke of Legnica: 1551- 1556( under regency), 1559 – 1576 and 1580- 1581.
He was the eldest son of Frederick III, Duke of Legnica, by his wife Katharina, daughter of Henry V, Duke of Mecklenburg- Schwerin.
Henry, Duke of Schleswig
Henry, Duke of Schleswig( – August 1375) was Duke of Schleswig( or Southern Jutland, as the Danes call it) from 1364 until his death.

Question: Who is the maternal grandfather of Henry, Duke Of Cornwall?