Lionel de Welles , 6th Baron Welles Lionel de Welles , 6th Baron Welles , KG ( c . 1406 – 29 March 1461 ) was an English peer who served as Lord Lieutenant of Ireland and Joint Deputy of Calais . He was slain fighting on the Lancastrian side at the Battle of Towton , and was attainted on 21 December 1461 . As a result of the attainder , his son , Richard Welles , 7th Baron Welles , did not succeed him in the barony of Welles until the attainder was reversed by Parliament in June 1467 . Family . Born about 1406 , Lionel Welles was the son of Eude Welles and Maud Greystoke . On his father ' s side , he was the grandson of John de Welles , 5th Baron Welles ( d . 26 August 1421 ) , and Eleanor Mowbray , and on his mother ' s side , the grandson of Ralph de Greystoke , 3rd Baron Greystoke and Katherine Clifford , daughter of Roger de Clifford , 5th Baron de Clifford . He had one brother , Sir William Welles , Lord Chancellor of Ireland . Career . Lionel Welles ' father , Eude Welles , died sometime before 26 July 1417 , predeceasing his own father , the 5th Baron . At the death of the 5th Baron in 1521 , Lionel Welles thus inherited the Welles barony and lands , but as he was underage , his wardship was granted to his future father - in - law , Robert Waterton ( d . 1425 ) , a ' trusted retainer of John of Gaunt and the Lancastrian Kings ' . He was knighted at the Parliament at Leicester by the infant Henry VI on 19 May 1426 , and had seisin of his lands on 5 December 1427 . He accompanied Henry VI to France in 1430 , was summoned to Parliament from 25 February 1432 to 30 July 1460 by writs directed " Leoni de Welles " , and was a privy councillor before 12 November 1434 . In 1435 he was with Humphrey , Duke of Gloucester , in the expedition sent to relieve the siege of Calais . He was a member of Henry VI ' s household before February 1438 . From 12 February 1438 he resided in Ireland as Lord Lieutenant ; according to Hicks , he ' failed to control the contending factions and resigned prematurely in 1442 ' . Together with Richard Woodville , 1st Earl Rivers , he served as Joint Deputy of Calais for his brother - in - law , Edmund Beaufort , 2nd Duke of Somerset , who was Lieutenant of Calais from 1451 to 1455 , and apparently remained at Calais until 20 April 1456 , when Richard Neville , 16th Earl of Warwick , took over as Lieutenant . Despite these appointments , according to Hicks , Welles was ' essentially a Lincolnshire landowner ' ; he was a Justice of the Peace and served on other commissions in that county . He was installed , together with John Talbot , 2nd Earl of Shrewsbury , as a Knight of the Garter on 14 May 1457 , and in October of that year was sent with English reinforcements to Calais . He was taken prisoner by Yorkist forces at the Battle of Blore Heath on 23 September 1459 . In 1461 he was with the army of Queen Margaret , which advanced on London , and won the Second Battle of St Albans on 17 February 1461 . He was slain a month later at the Battle of Towton on 29 March 1461 . After his death he was attained by Act of Parliament on 21 December 1461 , whereby all his honours were forfeited . He was buried with his first wife , Joan Waterton , in the parish church at Methley , Yorkshire . Marriages and issue . Welles married firstly Joan Waterton , daughter of Robert Waterton , esquire , of Methley , Yorkshire , and his second wife , Cecily Fleming , daughter of Sir Robert Fleming , by whom he had one son and four daughters : He married secondly , by licence dated 14 April 1447 , he married Margaret Beauchamp , widow successively of Sir Oliver St John ( d . 1437 ) and John Beaufort , 1st Duke of Somerset ( d . 27 May 1444 ) , and daughter of Sir John Beauchamp of Bletsoe , Bedfordshire , by his second wife , Edith Stourton , daughter of Sir John Stourton , by whom he had one son : By his second marriage Welles became the stepfather of Margaret Beaufort , mother of Henry VII .