The growth in Catholic pilgrimage in the late nineteenth and early twentieth century is widely acknowledged, but little attention has been paid to how and why many of the mass pilgrimages of the era began. This article will assess the contribution made by the Guild of Our Lady of Ransom to the growth of Catholic pilgrimage. After the Guild’s foundation in 1887, its leadership revived or restored pilgrimages to pre- and post-Reformation sites, and coordinated the movement of thousands of pilgrims across the country. This article offers an examination of how and why Guild leaders chose particular locations in the context of Marian Revivalism, papal interest in the English martyrs, defence of the Catholic faith, and late-nineteenth century medievalism. It argues that the Guild was pivotal in establishing some of England’s most famous post-Reformation pilgrimages. In doing so, it situates the work of the Guild in late nineteenth and early twentieth century religiosity, and demonstrates the pivotal nature of its work in establishing, developing, organising, and promoting some of the most important post-Reformation Catholic pilgrimages in Britain.