In 1517, a certain Dr Beale, rector of St Mary Spitall in London, had roused the capital's mob by laying the blame for an increase in poverty squarely upon the shoulders of grasping foreigners. 'God has given England to Englishmen, ' he fumed, and 'as birds would defend their nest, so ought Englishmen to cherish and defend themselves and to hurt and grieve aliens for the common weal.' But migration was not the only factor influencing Tudor attitudes...