Baron John De MOWBRAY
Another name for John was MOWBRAY Baron.
Ancestral File Number: 9GWB-7M.
Baron of MOWBRAY, Lord of MOWBRAY.
Kings and Queens of Great Britain, Genealogical Chart, Anne Taute and Romilly Squire, Taute, 1990: "Joan, Mar John Lord of Mowbray, Died 1361."
The Oxford History of England The Fifteenth Century 1399-1485, E F Jacob, Oxford Univ Press, p505:
 "...From the lords as a whole the Duke [Richard of York] got little support. To them a Yorkist succession implied the predominance of Neville, Mowbray, Vere, and their dependants, the consolidation of important power- groups in central and southern England..."
The Political History of England, Vol II, George Burton Adams Longmans Green and Co, 1905, Ch I, p54:
 "Already Norman families, who were to make so much of the history of the coming centuries,were rooted in the land. Montfort and Mortimer; Percy, Beauchamp, and Mowbray; Ferrers and Lacy; Beaumont, Mandeville, and Grantmesnil; Clare, Bigod, and Bohun; and many others of equal or nearly equal name. All these were as yet of no higher than baronial rank, but if we could trust the chroniclers, we should be able to make out in addition a considerable list of earldoms which William had established by this date or soon afterwards, in many parts of England, and in these were othergreat names..."
p312:  "...The Earl of Leicester's castles were given up, and the Earl of Derby and Roger Mowbray yielded theirs. This was on the last day of July. In three weeks after Henry's landing, in little more than two afterhis sincere penance for the murder of St Thomas, the dangerous insurrection in England was completely crushed- indeed for all the remainder of Henry's reign. The king's right to the castles of his barons was henceforth strictly enforced. Manywere destroyed at the close of the war, and others were put in the hands of royal officers who could easily be changed. It was more than a generation after this date and under very different conditions that a great civil war again broke out inEngland between the king and his barons."
Ch XIX, p393:  "...On the part of a considerable number of the barons- the names that are recorded are those of old historic families, Beaumont, Ferrers, Mowbray, De Lacy, the Earls of Clareand Chester- there was found to be opposition to taking the oath of fealty on the ground of injustice committed by the administration..."
A History of the Plantagenets, Vol I, The Conquering Family, Thomas B Costain, 1949, Doubleday & Co, p251:
"As [King John] drew near the appointed place [at Runnymede], the sound of cheering reached their ears, mingled with the neighing of horses and the loud, clear blast of trumpets. Coming into sight of the shore opposite the island, theysaw it was filled with armed horsemen, the sun shining on helmets and breastplates and on lances held erect to display the proudest pennons in England: the colors of Bigod, of Bohun, of Percy, of Lacey, and Mowbray, and De Vere. The reined in suddenly, his face red with mortification. Here for the first time he saw with his own eyes the tangible evedince of the unanimity of the barons in opposition to him. They had refused to follow him on his continental forays. It had taken hatredof him to bring them out thus in full force!"
Ancestral File Ver 4.11 9GWB-7M, 9BC1-MJ.
John married Baroness Joan Plantagenet MOWBRAY, daughter of Earl Henry Plantagenet LANCASTER and Maud De CHAWORTH. (Baroness Joan Plantagenet MOWBRAY was born about 1300-1340, died on 7 Jul 1349 and was buried in High Alter, Byland.)
John also married Elizabeth De VERE, daughter of Earl John De Vere OXFORD, I and Countess Maud De Badlesmere OXFORD. (Elizabeth De VERE was born about 1348.)