After he had abjured Protestantism, by 1578 probably, he was again presented by Philippe Desportes, abbot of Tiron, as a young man without equal for knowledge and talent. He was appointed Reader to the King by Henry III [Lecteur de la chambre du Roy].Les Divers Oeuvres de l' illustrissime Cardinal du Perron (Paris 1629) p. 581, and elsewhere. In 1578 he is also mentioned as Professeur du Roy aux langues, aux mathematiques, et en la philosophie.Feret, p. 7. He was commanded to preach before the king at the convent of Vincennes (1585), when the success of his sermon on the love of God,Les Diverses Oeuvres de l'illustrissime cardinal Du Perron seconde edition (Paris, 1629), pp. 533-580. and of a funeral oration on the poet Ronsard (on 24 February 1586, after dinner),Les Diverses Oeuvres de l'illustrissime cardinal Du Perron seconde edition (Paris, 1629), pp. 649-676. induced him to take orders. On the death of Mary, Queen of Scots (8 February 1587), he was chosen by the King to compose a poem in her honor and about her fate."La vie de l' illusstrisime Cardinal du Perron", in Les divers Oeuvres de l' illustrissime Cardinal du Perron seconde edition (Paris 1629), p. 20. Feret, pp. 14-15, points out that the solemn memorial service took place at Notre Dame on 13 March 1587, and that the Archbishop of Bourges, Renaud de Beaune, preached the funeral oration. De Thou, Histoires Book 86, chapter 16, confirms that du Perron was commissioned to write a poem.
