A very short apostrophe on our tour guide

We must not mistake the very learned and fully informed Samuel Rawson Gardiner, a tour guide without equal, for a disinterested observer in matters of religion. On page 34 he observes of the new (in 1584) Archbishop of Canterbury, John Whitgift, that He was unable to comprehend the scruples felt by sincere and pious men. It was a sincere and pious man with scruples that Gardiner held himself to be—he was a deacon in a church splintered from the Presbyterians. We will need to keep this in mind.