Richard, Earl of Salisbury is a third generation descendant of King Edward III, King of England. [S165] Royal Descents of 600 Immigrants, Gary Boyd Roberts, (Genealogical Publishing Co. Inc., 1001 N. Calvert St., Baltimore, MD 21202, 2004), page 1783738

From Wikipedia:3738
Although he was the 3rd son (and tenth child) of Ralph Neville, 1st Earl of Westmorland , Richard Neville was the first child to be born to Ralph's second wife, Joan Beaufort, Countess of Westmoreland. The Neville lands were primarily in Durham and Yorkshire , but both Richard II and Henry IV found the family useful to counterbalance the strength of the Percies on the Scottish Borders - hence Earl Ralph's title, granted in 1397, and his appointment as Warden of the West March in 1403. Ralph's marriage to Joan Beaufort, at a time when the distinction between royalty and nobility was becoming more important can be seen as another reward, for as a granddaughter of Edward III she was a member of the royal family.
The children of Earl Ralph's first wife had made good marriages to local nobility, but his Beaufort children married into much greater families. Three of Richard's sisters married dukes (the youngest Cecily , marrying Richard, Duke of York), and Richard himself married Alice Montacute, daughter and heiress of the Earl of Salisbury.
Marriage and children:
With Alice Montague he fathered ten children:
Cecily Neville , 1424 - 1450, who married Henry de Beauchamp, 1st Duke of Warwick
Richard Neville, 16th Earl of Warwick 1428 - 1471
John Neville, 1st Marquess of Montagu 1431 - 1471
George Neville 1432 - 1476, who became Archbishop of York and Chancellor of England
Joan Neville, 1434 - 1462, who married William FitzAlan, 16th Earl of Arundel
Katherine Neville, 1442 - 1503, who married first William Bonville, 6th Baron Harington & second William Hastings, 1st Baron Hastings
Thomas Neville, 1443 - 1460, who was knighted in 1449 and died at the Battle of Wakefield
Eleanor Neville, 1447 - 1482, who married Thomas Stanley, 1st Earl of Derby
Alice Neville, c. 1450 - 1503, who married Henry FitzHugh, 6th Lord FitzHugh. They were parents of Elizabeth Fitzhugh, grandparents of Sir Thomas Parr of Kendal & great-grandparents of Katherine Parr. Katherine was the sixth Queen consort of Henry VIII of England.
Margaret Neville, c 1450 - 1506, who married John de Vere, 13th Earl of Oxford
ntblPolitical officesntbl Preceded by John Kemp Lord Chancellor 1454-1455 Succeeded by Thomas Bourchier ntbl Peerage of England ntbl Preceded by Thomas Montacute (Restored 1421)Earl of Salisbury 1428-1460 Succeeded by Richard Neville

Pg 418 Richard Nevill (sic), Earl of Salisbury54947

Pg 339 Richard Nevill, Earl of Salisbury17383

Pg 146 Richard Neville, Earl of Salisbury17384

Pg 70 Line 94, Sir Richard de Neville, K.G., Earl of Salisbury17385

Pg 79 Line 78, Sir Richard de Neville, K.G., Earl of Salisbury25400

Pg 183 Chap 2, 20. Richard Neville, Earl of Salisbury 1428 (age 28) at his father-in-law’s death; Privy Councilor 1437 (age 37); Commissioner “to enquire of treasons, felonies, lollardries & c. 1441 (41), Chancellor 1454 (54)”; fought with the Duke of York at the first battle of St Albans 5-22-1455 (55); captured at the battle of Wakefield 12-30-1460 (60) “he was taken to Pontefract Castle, and, for a great sum of money which he would have paid, was granted his life; but the common people of the country, who loved him not, took him out of the castle by violence and smote off his head.” 17386

p.552 Lady Alice Nevill, d/o Earl of Saulsbury99113

Pg 503 Richard Neville, Earl of Salisbury84497

Dictionary of National Biography 1921-2217387
Vol 14 Image269of1384 Pg 252 Richard Neville, earl of Salisbury
Vol 14 Image296of1384 Pg 279 Neville, Richard, Earl of Salisbury. In 1420 or earlier, he succeeded his eldest half-brother, John Neville, as warden of the west march of Scotland, an office which frequently devolved upon the Nevilles. Six months after his father-in-law’s death (3 May 1429) Neville’s claim to the title of Earl of Salisbury in right of his wife was approved by the judges and provisionally confirmed by the peers in great council until the king came of age. On 4 May 1442 Henry VI confirmed his tenure of the dignity for his life
Image 283 Neville, Richard, Earl of Warwick and Salisbury, the Kingmaker
Vol 22 Image945of1511 Pg 937 Richard Neville, first earl of Salisbury in right of his wife 1429

Pg 776 4. Sir Richard Neville, K.G. Earl of Salisbury (CP, V, 429; XI, 395-8; Weis, “Ancestral Roots of Sixty Colonists”, 20, 21, 83)69568

Vol 1 Image244of318 Richard Neville, 2nd s/o Ralph, 1st Earl of Westmoreland17388
Vol 2 Image128 Richard Neville, Earl of Salisbury
Vol 2 Image 132 Richard Nevill, Earl of Salisbury

Richard Nevill, Earl of Salisbury K.G.78902

Appendix Pg 1169 Richard Nevill, earl of Salisbury85158

Pg 237 Sir Richard de Neville, who was recognized as Earl of Salisbury, KG.17389

Image 279 Vol 14 Pg279 Neville, Richard, Earl of Salisbury. In 1420 or earlier, he succeeded his eldest half-brother, John Neville, as warden of the west march of Scotland17387 (Half-brother John Neville?)

Richard Neville child: Joan Nevill Fitzalan81917 (another child named Joan? other sources do not include her)
Richard Neville child: Cicely Beauchamp Tiptoft (another child named Cicely? other sources do not include her)