John De BERKELEY 
John De was born in 1277 in Berkeley, Gloucestershire, England. John De's father was Thomas BERKELEY Baron and his mother was Joan De FERRERS BARONESS BERKELEY. He had three brothers and three sisters, named Maurice IV the magnificent, James De, Thomas III De, Alice, Margaret De and Isabel De. He was the fourth oldest of the seven children. He had a half-sister named Margaret. He died at the age of 40 in 1317.
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