His friendship with the Earl of March led to a long conflict with John of Gaunt, who supported Latimer. Latimer was pardoned by king in October 1376, and William found himself charged with financial irregularities and mismanagement towards the end of the year. He was banished from court and the income from his church properties was seized in late 1376, but he was pardoned by the new king Richard II in July 1377, weeks after Edward III died.