Cooke served as High Sheriff of Essex in 1545. He was never officially described as tutor to Edward VI. It is now thought he may have been more a companion and guide than a formal teacher. However, in 1555 Caelius Secundus Curio, in his dedication letter to Cooke of Sir John Cheke's De Pronuntiatione Graecae, wrote that "the boyhood of King Edward was handed over and entrusted to the two of you for instruction in letters, behaviour and religion... from you that divine boy drank in that learning, than which not Cyrus, nor Achilles, nor Alexander, nor any king ever received more wholesome and sacred." Peter Martyr, in dedicating to Cooke his Commentaries on St Paul's Epistle to the Romans, wrote: "I for my part doubtles have, ever since that the time that I dwelt in England, borne a singular love and no smal or vulgar affection towards you, both for your singular piety and learning, and also for the worthy office which you faythfully and with great renoune executed in the Christian publike wealth, in instructing Edward, that most holy King..." Of his preceptors, Edward is reputed to have said,
"Randolph the German spoke honestly, Sir John Cheke talked merrily, Dr. Coxe solidly, and Sir Anthony Cooke weighingly."
At Edward's coronation Cooke was created a Knight of the Bath. On 8 November 1547 he was returned to Parliament for Lewes, and in the same year was one of the visitors commissioned by the crown to inspect the dioceses of London, Westminster, Norwich, and Ely; the injunctions drawn up by him and his companions are printed in John Foxe's Acts and Monuments. Two years later he served on two ecclesiastical commissions, of Protestant tendencies. In November and December 1551 he attended the discussion held between Roman Catholics and Protestants at the houses of Sir William Cecil and Sir Richard Moryson, and his public services were rewarded with a grant of land. On 27 July 1553 he was committed to the Tower of London on suspicion of complicity in Lady Jane Grey's movement. After his release he went into self-imposed exile to avoid Mary's attempt to reintroduce Catholicism. He travelled widely, spending most time in Strasbourg where he was in contact with leaders of the Reformed faith, and returned following the death of Mary and the accession of Elizabeth I in 1558. Cooke then served on several religious commissions, and sat as a knight of the shire for Essex in parliament in 1559 and again in 1563; but he took little or no further part in national affairs. He was appointed Custos Rotulorum for Essex in 1572, but the work resulting from this post was performed by his steward, Francis Ram. He died on 11 June 1576, aged seventy-two, and was buried in St Andrew's, Romford. There is an elaborate memorial to him in St Edward the Confessor Church, Romford. This notes his "exceptional learning, prudence and piety". However, Marjorie McIntosh describes him as "a strong protestant of a dark and unforgiving colour". He was one of the co-owners of Burton Dassett in Warwickshire and conducted a lengthy, but ultimately unsuccessful legal campaign to block the sale of part of the estate to Peter Temple. Cooke is particularly remembered because he educated his daughters, who were taught both Latin and Greek. Anne published translations from Italian and Latin and Elizabeth a translation of a Latin treatise on the sacrament.
Marriage and issue
Cooke married Anne Fitzwilliam, the daughter of Sir William Fitzwilliam, Master of the Worshipful Company of Merchant Taylors and Sheriff of London, by his first wife, Anne Hawes, daughter of Sir John Hawes, by whom he had four sons and five daughters:
