[1] Entering the service of Charles de Croÿ as a lawyer, Pintaflour resigned his university positions and moved to Brussels.
He employed a curate to minister to the parish, while he himself served as head of Charles de Croÿ's diocesan tribunal from 1554 to 1555, before being assigned to a canonry of Tournai Cathedral.
He was later named bishop, taking possession of the see on 15 June 1575, and receiving episcopal consecration at the hands of Martin Rythovius in Kortrijk Minster on 31 July 1575.
[1] He worked with Rythovius and Remi Drieux to influence John of Austria's policy, insisting that the Pacification of Ghent was neither contrary to the teachings nor detrimental to the position of the Catholic Church.
[1] In 1578 he took an oath to support William of Orange in so far as this involved nothing contrary to the interests of the Church or the authority of the king, Philip II of Spain.