The Marian Exiles were English Protestants who fled to the continent during the reign of the Roman Catholic Queen Mary I and King Philip. They settled chiefly in Protestant countries such as the Netherlands, Switzerland and Germany, and also in France, Italy and Poland.
According to English historian John Strype, more than 800 Protestants fled to the continent, mainly to the Low Countries, Germany, and Switzerland, and joined with reformed churches there or formed their own congregations. A few exiles went to Scotland, Denmark, and other Scandinavian countries.
Notable English exile communities were located in the cities of Emden, Strasbourg, Cologne, Wesel, Duisburg, Worms, Basel, Frankfurt, Aarau, Zürich, Geneva, Padua, and Venice. The exiles did not plan to remain on the continent any longer than was necessary; there was considerable controversy and anxiety among them and those who remained in England over the legitimacy of fleeing, rather than facing, religious persecution. This concern contributed to the attention and authority given to those who remained in England and were martyred, as in the writings of one of the most famous exiles, John Foxe.