In late summer of 1778, Shippen met Arnold, the Continental military commander of Philadelphia, and he began courting her despite the differences between himself and Judge Shippen. Shortly after, Arnold sent her father a letter asking for her hand, but Shippen was skeptical of Arnold due to Arnold's legal problems. In 1779, the Supreme Executive Council of Pennsylvania had brought eight formal charges against Arnold for corruption and malfeasance with the money of the federal and state governments, and he was subsequently convicted on two relatively minor counts. Despite this, Edward Shippen eventually granted permission for Arnold and Peggy to marry, which took place on April 8, 1779.