William Pitt the Younger died in 1806 but had a long afterlife in political argument. Historians have argued that a reactionary cult of Pitt in early nineteenth-century toryism died with Catholic emancipation, but this article suggests that invocation of Pitt's character was more widespread and durable, because linked to the assertion and defence of party identities. Whig hostility to Pitt remained strong even in the middle of the nineteenth century. Lord John Russell attacked his character flaws to celebrate the continued vigour and distinctness of Foxite political culture within the Liberal party. Conversely, use of Pitt in argument about what the tory party should be like did not end with reform. In the 1830s, traditional celebration of Pitt as a stern opponent of revolutionary agitation survived within a supposedly moderate conservatism. In Peel's second administration, arguments about whether Pitt had been firm or flexible, liberal or intransigent, reflected and added to disputes about how much religious and economic liberalism Peel should endorse. It was schism between Peelites and protectionists, the article suggests, which broke the clear link between celebration of Pitt's character and one party, allowing a more wide-ranging, because less politically charged, appreciation of Pitt to develop.