At the age of 17 he entered the Order; having taken his degree in theology at Padua in 1547, he became professor at the Sapienza, vicar general (1562), and then prior general (1564). During his canonical visitation in Spain and Portugal, he had occasion to meet St Teresa of Jesus at Avila (Apr. 1567): he approved her spirit, encouraged her to continue with the reform of the nuns according to the primitive Rule, and even authorized, by letters patent (Barcelona, 16 Aug. 1567), the foundation of two houses for Carmelite contemplatives. But at the General Chapter of Piacenza (1575), which confirmed him in his office, severe decisions were taken against the reformers for lack of precise information: the closing of the three convents in Andalusia (Granada, Seville, Peñuela), the return of the contemplatives from the ancient observance to their original convents, and an injunction to St Teresa to choose a monastery from which she would no longer leave. Nevertheless, R. always retained esteem and veneration for the holy reformer, who speaks of him with admiration in the *Libro de las Fundaciones* (ch. 2).
Among his various works, printed or in manuscript, may be mentioned the edition of the *Doctrina antiquitatum fidei Ecclesiae catholicae* of T. Netter (Waldensis), edited by R. with notes (3 vols., Venice 1571).