RICHARD PLANTAGENET, 3RD DUKE OF YORK, (1411-1460). Cecylee’s husband, he was murdered by the Lancastrians in the Battle of Wakefield, December 1460.
LADY JOAN PLANTAGENET (born circa 1438, died circa 1441).
ANNE PLANTAGENET, “NAN”, DUCHESS OF EXETER (1439-1476), eldest surviving child of Cecylee and Richard, she was married to Henry Holland, 3rd Duke of Exeter in 1447, when she was 7 years old. She divorced her husband in 1472 and in around 1474, married Thomas St. Leger. She died in 1476 after giving birth to their child Anne St. Leger.
LORD HENRY PLANTAGENET (born 1441, died as a child), first son of Cecylee and Richard.
EDWARD, EARL OF MARCH (1442-1483), KING EDWARD IV OF ENGLAND from 1461. Cecylee’s illegitimate son by her lover Blaybourne, he became heir to the House of York on the death of his half-brother Edmund, Earl of Rutland and his stepfather, Richard, Duke of York. Winning victories at Mortimer’s Cross in February 1461 and Towton in March 1461, Edward was crowned King of England in June 1461.
EDMUND PLANTAGENET, EARL OF RUTLAND (1443-1460), Cecylee and Richard’s first surviving son. Richard treated this child as his heir. He was murdered at the Battle of Wakefield in December 1460.
ELIZABETH PLANTAGENET,, “BETH”, DUCHESS OF SUFFOLK (born 1444-died circa 1504), second surviving daughter of Richard and Cecylee, she was married to John de la Pole, 2nd Duke of Suffolk in 1458, and bore him eleven children.
MARGARET PLANTAGENET, DUCHESS OF BURGUNDY (1446-1503). Cecylee and Richard’s youngest daughter. Married to Charles the Bold, Duke of Burgundy in July 1468. She had no surviving children, but became great friends with her stepdaughter, Mary the Rich, Duchess of Burgundy.
LORD WILLIAM PLANTAGENET (born 1447, died as a child), Cecylee and Richard’s third son.
LORD JOHN PLANTAGENET (born 1448, died as a child), Cecylee’ and Richard’s fourth son.
GEORGE PLANTAGENET (1449-1478), DUKE OF CLARENCE from 1461. Cecylee and Richard’s second surviving son. Married to Isabel Neville, elder daughter and heiress of Richard Neville, 16th Earl of Warwick in July, 1469. Executed for treason in February 1478, by his half-brother King Edward IV.
LORD THOMAS PLANTAGENET (born 1450, died as a child), Cecylee and Richard’s sixth son.
RICHARD PLANTAGENET (1452-1485), DUKE OF GLOUCESTER from 1461, KING RICHARD III from 1483. Cecylee and Richard’s youngest surviving son. In around 1472, he married Anne Neville, younger daughter and co-heiress of Richard Neville, 16th Earl of Warwick. He is the infamous monster of Shakespeare’s play, an exaggerated re-telling of his reign written to please Henry Tudor’s grand-daughter Elizabeth I.
LADY URSULA PLANTAGENET (born 1455, died as a baby), Cecylee and Richard’s youngest child.
HENRY HOLLAND, 3RD DUKE OF EXETER (1430-1475), was married to Lady Anne Plantagenet, eldest daughter of Richard and Cecylee in 1447. (See Lancaster).
ANNE HOLLAND (1455-1474), daughter of Henry Holland, 3rd Duke of Exeter and Anne Plantagenet, she was Cecylee’s eldest grandchild. She was married to Thomas Grey, 1st Marquess of Dorset the elder son of Queen Élisabeth Woodville. She died in 1474, aged 19, from the effects of childbirth.
THOMAS DE ST LEGER (died November 1483) was the second husband of Anne Plantagenet, Duchess of Exeter. He was executed by Richard III in November 1483, presumably for supporting Henry Tudor’s abortive attempt to invade England.
ANNE ST. LEGER (1476-1526), daughter of Sir Thomas de St. Leger, and Anne Plantagenet, she was one of Cecylee’s granddaughters. Due to the attainder against Anne Plantagenets’s first husband, Henry Holland, 3rd Duke of Exeter, Anne’s daughter with Thomas de St. Leger became the heiress to the Exeter estates.
LADY ELEANOR TALBOT also known as LADY ELEANOR BUTLER (born circa 1435, died 1468), youngest daughter to John Talbot, 1st Earl of Shrewsbury. She married (a) Sir Thomas Butler, (b) Edward IV. (See Beauchamp).
EDWARD OF WIGMORE (born circa 1463, died circa 1468), son of Edward IV and Lady Eleanor Talbot.
QUEEN ÉLISABETH WOODVILLE “THE SERPENT” (born circa 1437, died 1492), eldest daughter of Sir Richard Woodville and Jacquetta de St Pol. Married (a) Sir John Grey of Groby (born circa 1432, died 1461), (b) King Edward IV (1442-1483). (See Woodville).
WILLIAM DE LA POLE, 4th EARL OF SUFFOLK (1396-1450). DUKE OF SUFFOLK from 1448. Succeeded Cardinal Beaufort as head of the Court Party. Friend of Queen Marguerite. Murdered May 2, 1450 on the gunwales of a boat, on his way to France.
ALICE CHAUCER, DUCHESS OF SUFFOLK (1404-1475), daughter of Thomas Chaucer and Matilda Burghersh, she was a granddaughter of Geoffrey Chaucer the poet. In 1430, she married William de la Pole, Earl of Suffolk.
JOHN DE LA POLE, 2ND DUKE OF SUFFOLK (born 1442, died circa 1492), son of William de la Pole, 4th Earl of Suffolk and 1st Duke of Suffolk, married Elizabeth Plantagenet, Richard and Cecylee’s second daughter, in 1458. A loyal servant of King Henry VII, he died in bed of natural causes.
JOHN DE LA POLE, EARL OF LINCOLN (born circa 1462, died 1487), eldest son and heir of John de la Pole, 2nd Duke of Suffolk, and Elizabeth Plantagenet, he was one of Cecylee’s grandsons. On the death of Edward of Middleham in 1484, Richard III made him his heir. He was killed at the Battle of Stoke by Henry VII.
PHILIP III DUKE OF BURGUNDY “THE GOOD” (1396-1467). Cecylee sent her younger sons George and Richard to the Burgundian court for safekeeping during the siege of London in February 1461.
CHARLES OF CHAROLAIS, “CHARLES THE BOLD”, (1433-1477) DUKE OF BURGUNDY .from 1467.  The son of Philip the Good, Duke of Burgundy and Isabel of Portugal he married, as his third wife, Cecylee’s daughter Margaret in 1468. They had no children. Charles was the father of Mary the Rich, Duchess of Burgundy.
ISABELLE DE BOURBON (1436-1465), daughter of Charles I, Duke of Bourbon, she was the second wife of Charles the Bold Duke of Burgundy. She was married to Charles in 1454, when she was about eighteen years old. They had one child, Mary the Rich, Duchess of Burgundy.
MARY OF BURGUNDY “MARY THE RICH”, (1457-1482), DUCHESS OF BURGUNDY from January, 1477, she was the only child and heiress of Charles the Bold, Duke of Burgundy. She formed a close friendship with her stepmother Margaret of York, Cecylee’s youngest daughter. Besieged by suitors, including Cecylee’s son George, she married Maximilian of Austria in August, 1477.
ISABEL NEVILLE, DUCHESS OF CLARENCE, COUNTESS OF WARWICK and COUNTESS OF SALISBURY “BELLA” (1451-1476), elder daughter and heiress of Richard Neville, 16th Earl of Warwick and Anne Beauchamp. She married George, Duke of Clarence. in 1469. (See Neville).
MARGARET PLANTAGENET (1473-1541), COUNTESS OF SALISBURY from 1512, daughter of George, Duke of Clarence and Isabel Neville. In 1487, she was married to Sir Richard Pole, a cousin of Henry VII. Her descendants are the rightful heirs to the throne of England. She was executed by Henry VIII, the Tudor Bluebeard, for her continued adherence to the Catholic faith. But it probably didn’t help her cause that she was so close to the throne.
SIR RICHARD POLE (born 1462, died circa 1505), a Welsh supporter of Henry VII, he was married to Lady Margaret Plantagenet, daughter of George, Duke of Clarence in 1487. His mother was half-sister to Lady Margaret Beaufort, the mother of Henry VII.
HENRY POLE (born circa 1492, died 1539), 1ST BARON MONTAGU from 1514, he was the son of Margaret, Countess of Salisbury and Sir Richard Pole, and thus the grandson of George, Duke of Clarence. He was married to his distant cousin Jane Neville, daughter of George Neville, 4th Baron Bergavenny.  They had five children.
EDWARD PLANTAGENET (1475-1499), 17TH EARL OF WARWICK from 1478, the son and heir of George Plantagenet, 1st Duke of Clarence and Isabel Neville, Countess of Warwick. Thrown in the Tower of London in 1485 by Henry Tudor, he was executed in 1499.
RICHARD OF CLARENCE (1476-1477), youngest child of George, Duke of Clarence and Isabel Neville.
ANNE NEVILLE, PRINCESS OF WALES and DUCHESS OF GLOUCESTER “NANETTE” (1456-1485), younger daughter and co-heiress of Richard Neville, 16th Earl of Warwick and Anne Beauchamp. Married (a) Edouard, Prince of Wales and (b) Richard, Duke of Gloucester, later King Richard III. (See Neville).
EDWARD OF MIDDLEHAM, PRINCE OF WALES (born circa 1476, died 1484), son and heir to Richard of Gloucester, (later Richard III), and Anne Neville.
LADY ISABEL PLANTAGENET, (1409-1484), Richard’s sister and Cecylee’s sister-in-law, married (a) Sir Thomas Grey and (b) Henry, Viscount Bourchier.
SIR THOMAS GREY (dates unknown), was the namesake son of Sir Thomas Grey and Alice Neville, daughter to Ralph Neville, 1st Earl of Westmorland and Margaret Stafford. He was married to Isabel Plantagenet, sister of Richard, Duke of York in 1413, when she was four years old.
HENRY BOURCHIER, 1ST VISCOUNT BOURCHIER (1406-1483), 1ST EARL OF ESSEX from 1461, he was the eldest son of William de Bourchier, 1st Count of Eu (a Norman title) and Anne of Gloucester, a granddaughter of Edward III. In 1426, he married Richard’s sister Isabel. He appears to have died in bed of natural causes.
EDWARD OF NORWICH, EARL OF RUTLAND (1373-1415), 2ND DUKE OF YORK from 1402. He was the son and heir of Edmund of Langley, 1st Duke of York. He married Philippa de Mohun, a widow, but had no children. He was killed at the Battle of Agincourt.
RICHARD OF CONISBURGH, EARL OF CAMBRIDGE (1375-1415). The second son of Edmund of Langley, he married Lady Anne de Mortimer, a descendant of Edward III via his second son Lionel of Antwerp. They had two children: Lady Isabel Plantagenet and Richard, Duke of York. He would have been Cecylee’s father-in-law, if he hadn’t been executed for treason in 1415.
EDWARD III, KING OF ENGLAND (1312-1377), reigned England from 1327 to 1377. Known for his consultative kingship, in which he kept his magnates happy by asking their advice on affairs of state, and by marrying his sons into the English aristocracy, he reigned peacefully for 50 years.
LIONEL OF ANTWERP, 1ST DUKE OF CLARENCE (1338-1368), second son of King Edward III, he married Elizabeth de Burgh, 4th Countess of Ulster. She died in 1363, leaving him with one daughter, Philippa, Countess of Ulster, who later married Roger Mortimer and became the maternal grandmother of Cecylee’s husband Richard. After the death of his first wife, Lionel married Violante, daughter of Galeazzo Visconti. Some say he was poisoned by his father-in-law during the wedding festivities.
PHILIPPA, COUNTESS OF ULSTER (1355-1382), was the daughter and only child of Lionel of Antwerp, 1st Duke of Clarence and Elizabeth de Burgh, 4th Countess of Ulster.  Her father was the second son of King Edward III. Philippa was married to Edmund Mortimer, 3rd Earl of March in about 1368. During her lifetime, Philippa was the heiress-presumptive to her first cousin Richard II. After her death in 1382, her rights passed on to her son, Roger Mortimer, 4th Earl of March. When Richard II resigned his crown without issue on 29 September 1399, the rightful heir was her grandson, Edmund Mortimer, 5th Earl of March. However, the throne was usurped by Richard and Philippa’s first cousin, Henry of Bolingbroke, who became King Henry IV.
LADY ANNE DE MORTIMER (1390-1411), eldest child of Roger Mortimer, the wealthy Mortimer heiress was married to Richard, Earl of Cambridge and became the mother of Isabel Plantagenet and Richard, Duke of York. Would have been Cecylee’s mother-in-law had she lived.

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