[1] Mountjoy was knighted in January 1478 at the marriage of Edward IV's young son, Richard of Shrewsbury, 1st Duke of York.
[3] This became apparent to King Richard when, later that year, he ordered the return to England of John de Vere, 13th Earl of Oxford, who had been held prisoner at Hammes for nearly a decade.
[2] James Blount and others were with Henry when he invaded England and became King after defeating Richard III at the Battle of Bosworth.
He instructed his two sons to "live rightwisely and never to take the state of baron upon them if they may leave it from them, nor to desire to be great about princes for it is dangerous".
[1] Mountjoy married, about 1477, Lora Berkeley (d. 1501), the daughter of Edward Berkeley (d. March 1506) of Beverston Castle, Gloucestershire, son of Sir Maurice de Berkeley by his wife Lora FitzHugh, and Christian Holt (d. 1468), second daughter and coheir of Richard Holt, esquire, by whom he had two sons and two daughters:[7][1][8][6] After Mountjoy's death, his widow, Lora (née Berkeley), married secondly, in 1485, Sir Thomas Montgomery (d. 2 January 1495) of Faulkbourne, Essex, by whom she had no issue, and thirdly Thomas Butler, 7th Earl of Ormond, by whom she had a daughter, Elizabeth Butler.