From "Transactions of the Essex Archaeological Society", Vol I, Colchester, pp 251-273, The History of the Barrington Family
@www.southfrm.demon.co.uk/Genealogy/Barr.html:
In a curious deed, Radullphus de Upton, of West Ham, granted to Humphrey de Barenton the care of all his lands, other things, receipts, and rents, as also the wardship and marriage of his son Robert to any one, he, Humphrey, should please; and in case of Robert's death, the marriage of his son, William, and of his two daughters, Aveline and Beatrix, binding himself in the case of the death of his wife Matilda not to marry again, so as not to interfere with the rights of his sons. There are two other deeds relating to Humphrey de Barenton, one is a grant of land in Hatfield to him from Alan de Buiss, for which he gave to the grantor a mark of silver, to his wife Juliana twelve pence, and the same sum to his son and heir Nicholas. The other is a surrender and quit claim to him of part of a wood at Ramsden. Humphrey is said to have married Amicia, daughter of Sir William de Mandeville, third son of Geoffrey de Mandeville, first Earl of Essex. This Sir William de Mandeville, on the death of his brother Geoffrey without issue, became himself third Earl, and in all accounts of the family is stated to have died without issue, and indeed this must have been the case, as all his estates descended to his father's sister's grandchild, Beatrix de Say, whose husband, Geoffrey Fitzpiers, was in consequence created Earl of Essex. This Amicia, the wife of Humphrey de Barenton, if the daughter of William de Mandeville, must have been a natural child. She seems to have inherited considerable property, as in the Close Rolls in the reign of Henry the Third, is an order to the Sheriff of Essex to give to Humphrey de Barenton and Amicia his wife peaceable possession of their lands in Shevington, Waleden and Teyden on their doing the service for them they had been accustomed to perform. If however Robert Fitzwalter of any other person should require any service from the said lands, the Sheriff was to appoint a day for his appearance in Court before the King, when full justice should be done to him. The chattells which had been seized, and of which Robert kept possession, were to be restored without any delay. This Robert Fitzwalter was father of William de Mandeville's second wife Christiana. There is a very curious agreement (which unfortunately is so stained as to be illegible in some places) between Humphrey de Barenton and Alan de Sepere, by which Humphrey became security with Alan to Benjamin and his sister Cissorie, Jews at Cambridge, for the payment of two pounds per annum for eight years. The first payment to be at Michaelmas next after the marriage of Earl William to the daughter of the Earl of Albermarle. Alan de Sepere giving to Humphrey, as a security, a mortgage on all the fee Humphrey held under him ; so that should he, Humphrey, be called upon to pay any part of the debt, he should have full possession of the fee, without any restriction, until he was repaid all the money he had advanced. The Earl William named in this agreement, was the William de Mandeville, whose daughter Amicia Humphrey married, and the agreement refers to his, William's, marriage to his first wife, Haurse, or Aricia, daughter of William le Gros, Earl of Albermarle. Humphrey was knighted by King Henry the Second as was his brother Warin by King John. Warin and his younger brother Richard appear as witnesses to the above-named agreement with Alan de Sepere and their names are found to deeds relating to property in Hatfield. Humphrey had a son and heir Nicholas, of whom hereafter, and several other sons, William, Hugh and Colin are all met with. William is named as the owner of land at Nosterfield in a deed, without date, from Henry de Capeles to the Prior and Monks of Hatfield. Hugh in 1221 is called "Magister Hugo de Barenton, Carpentarius," and Colin held an office in the Forest of Essex, and several orders are addressed to him by the King, some of which will be named in the account of the Forest.