Simon returned to England in April 1263 and convened a council of rebel barons in Oxford to pursue a renewed anti-Poitevin agenda. Revolt broke out shortly afterwards in the Welsh Marches and, by October, England faced a likely civil war between Henry, backed by Edward, Hugh Bigod and the conservative barons, and Simon, Gilbert de Clare and the radicals. The rebels leveraged concern among knights over abuse of Jewish loans, who feared losing their lands, a problem Henry had done much to create and nothing to solve. In each case following, the rebels employed violence and killings in a deliberate attempt to destroy the records of their debts to Jewish lenders.