British Anglo-Catholic and high church Anglicans promoted a new set of foreign missionary initiatives in the Pacific and South and East Africa in the 1860s. Theorizing new indigenizing models for mission inspired by Tractarian medievalism, the initiatives envisioned a different and better engagement with ‘native’ cultures. Despite setbacks, the continued use of Anglican sisters in Hawai‘i and brothers in Melanesia, Africa and India created a potent new imaginative space for missionary endeavour, but one problematized by the uneven reach of empire: from contested, as in the Pacific, to normal and pervasive, as in India. Of particular relevance was the Sandwich Islands mission, invited by the Hawaiian crown, where Bishop T. N. Staley arrived in 1862, followed by Anglican missionary sisters in 1864. Immensely controversial in Britain and America, where among evangelicals in particular suspicion of ‘popish’ religious practice ran high, Anglo-Catholic methods and religious communities mobilized discussion, denunciation and reaction. Particularly in the contested imperial space of an independent indigenous monarchy, Anglo-Catholics criticized what they styled the cruel austerities of evangelical American ‘puritanism’ and the ambitions of American imperialists; in the process they catalyzed a reconceptualized imperial reformism with important implications for the shape of the late Victorian British empire.