If all other means failed, Vannes was 'to inquire whether the pope will dispense with the king to have two wives, making the children of the second marriage legitimate as well as those of the first, whereof some great reasons and precedents appear, especially in the Old Testament.'
Vannes maintained friendly relations with Wolsey after his fall, which did not interfere with his advancement; on 4 December 1529 he was collated to the prebend of Bedwyn in Salisbury Cathedral, and on the 16th was instituted to the rectory of Wheathamstead, Hertfordshire.
On 17 July 1533 he was appointed collector of papal taxes in England, an office soon to become a sinecure; and in the same year he was sent on the king's business to Rome, Avignon, and Marseilles.
On 12 May 1534 Vannes was made archdeacon of Worcester; on 22 February 1535 he was admitted prebendary of Bole in York Cathedral; on 22 September 1535 was constituted coadjutor to the dean of Salisbury, who was of unsound mind.
He also received shortly afterwards the prebend of Shipton-Underwood in Salisbury Cathedral, the rectory of Tredington, Worcestershire; and in 1545 a pension on the loss of his canonry by dissolution at the Priory of St Frideswide, Oxford.
In September 1551 he urged the Council of Ten to restore to Sebastian Cabot the property claimed by him, and on 16 Oct. was given credentials to the senators of his native city Lucca.