[36] Hoo became Chancellor of France in 1443 after the death of Louis de Luxembourg, Bishop of Thérouanne[37] In 1439 Hoo was in Lord Talbot's forces in the large expedition into France under Richard Duke of York, and was sent by his commander to the Captain at Mantes and to the Lieutenant at Pontoise, to strengthen the garrison of Vernon.
In January 1442 he went with François de Surienne to propose a scheme to capture the town and fortress of Gallardon: they were to pay for the men-at-arms and archers, and to provide 250 men each to the King's service, but if successful were to have command of the place and the division of the spoils, and Sir Thomas was to be reimbursed his expenses.
[38] In September 1442 he was appointed to the Embassy to negotiate peace with the French king, led by Richard Duke of York and Cardinal Louis (who was then in the capacity as Chancellor of France).
Important insights into the life and character of Lord Hoo are preserved in a Book of Hours which was made for him around 1444, probably as a gift for his wife Eleanor.
They include patron images (identifiable by heraldry): Lord Hoo prays to the Holy Trinity, a little preceding a scene of the disembowelling of St Erasmus, suggesting that he may have suffered from intestinal troubles.
Dame Eleanor prays to the Virgin and Child, and wears a high butterfly headdress, and the arms of Hoo impaling Welles upon her kirtle: just after this, images of St Leonard and St Hildevert (Bishop of Meaux, died c. 680) are inserted, suggesting that she may have been afflicted by mental weakness or epilepsy.
[46] The volume's extensive texts include a unique collection of prayers of an anxious and penitent nature, possibly exemplifying episodes or responsibilities in Lord Hoo's own life.
Both artists (of whom the "Hoo Master" was notably more sophisticated in technique) were probably miniaturists of the Parisian school who had moved to work at Rouen.
[47] In June 1443, Hoo, "the King's knight", was awarded £40 a year for life, out of the revenues of Norfolk, "for many great and toilsome services in the wars in France, no small time".
[48] On 19 July 1445[49] he was granted the castle, lordship, barony and honour of Hastings,[50] and in that year was elected and, in 1446, installed as Knight of the Order of the Garter.
"[53][54]The Receiver-General's accounts for that year show a payment to him of one thousand livres tournois, as Chancellor of Normandy, for a journey which he made into England in November.
[55] In 1449, his term as Chancellor of the Duchy of Normandy concluded, and he returned to England, where he was regularly summoned to Parliament until the time of his death.
Hoo himself faced a commission of inquiry in 1450–51 upon complaints that he had failed to pay the soldiery of France and Normandy under his authority.
He dated his will 12 February 33 Henry VI, making provision of £20 per annum for a chantry of two monks singing perpetually for himself and his ancestors at the altar of St Benignus (a Burgundian saint) at Battle Abbey.
The reversion of his manors of Wartling, Bucksteep (in Warbleton) and Broksmele (Burwash) was held by his stepmother Lady Lewkenor for life, but his feoffees were to make up a parcel of lands worth £20 a year for his brother Thomas Hoo (1416–1486), and the overplus, after the deduction of his funeral and testamentary charges, was to revert to his widow Dame Eleanor for life.
[68] During the restoration of the monument this was confirmed by underlying evidence of the heraldry of the tabards, and by the presence of a knightly Garter (mostly removed) appropriate to Lord Hoo but not to these Fiennes.
[69] The heraldry of the Hoo family and its antecedents is understood from surviving seals and from manuscript sources formerly in the custody of Sir Francis Carew of Beddington, Surrey and of Jonathan Keate, Bart.