Henry Edward Manning, son of a governor of the Bank of England, graduate of Harrow and Oxford, ended his life being denounced for home rule politics and socialistic economics. Manning expected to 'sink to the bottom and disappear' when he resigned as Anglican archdeacon of Chichester in 1850 before converting to Catholicism. But in 1865, the pope personally intervened to appoint him archbishop of Westminster and leader of the Catholic Church in England, and in 1875 created him a cardinal. Manning's increasing radicalism arguably constitutes a 'greening', the application to England of insights gleaned from his engagement with Ireland. His pamphlet Ireland: A Letter to Earl Grey adopted politically radical ideas in response to Irish conditions. This chapter offers a preliminary sketch of how in the service of a new Irish Catholic identity his economics radicalised, beginning with the pamphlet The Dignity and Rights of Labour.