wallis joined the moderate presbyterians in signing the remonstrance against the execution of charles i, by which he incurred the lasting hostility of the independents. in spite of their opposition he was appointed in 1649 to the savilian chair of geometry at oxford university, where he lived until his death on . in 1650, wallis was ordained as a minister. after, he spent two years with sir richard darley and lady vere as a private chaplain. in 1661, he was one of twelve presbyterian representatives at the savoy conference.