In 1639 Vaughan returned to England, but was immediately attracted to Denmark by the discovery of a golden horn adorned with mysterious figures, which he and his colleagues in alchemy supposed to typify the search for the philosophical stone.

At the age of twenty-eight, Vaughan made further progress in the Rosicrucian Fraternity, being advanced to the grade of _Adeptus Minor_ by Amos Komenski, in which year also Elias Ashmole entered the order.

Accompanied by Komenski, Vaughan proceeded to Hamburg, thence by himself to Sweden, and subsequently to the Hague, where he initiated Martin de Vries.

A year later he visited Italy, and made acquaintance with Berigard de Pisa.

This was a pious pilgrimage which testified his devotion to Faustus Socinus, for Miss Vaughan, on the authority of her documents, regards the Italian heretic, not only as a conscious Satanist, but as the founder of the Rosicrucian Society, and the initiator of Johann Valentin Andreae, whom he also won over to Lucifer.