At the death of his father in 1650, he returned briefly to Amsterdam to oversee the shipping of his father's library to Stockholm. He determined to leave Sweden in 1654, and after Christina abdicated upon her conversion to Catholicism, he followed her to Brussels, where he took his leave of her. The impecunious queen paid her former librarian's outstanding back pay in books, among which was the Codex Argenteus.[1] In 1664 Vossius was elected a Fellow of the Royal Society in London.[2]