However, Du Hamel's influence would not be felt as strongly as he (and others) may have wished, with some scholars attributing this to his religious influences, and others to his attention to other work. Specifically, his sterling reputation and his command of Latin caused him to be appointed as a member of the French delegation at Aix-la-Chapelle, negotiating a peace with Spain after the War of Devolution. In addition, he was later sent to England to assist a French diplomat, and while there, met with Robert Boyle, Henry Oldenburg, and other members of the Royal Society.