A lengthy doctrinal treatise entitled Give unto Ceasar the thinges of Ceasar, written not earlier than 1644, but probably before 1649, in defence of the divine right of kings; drafts and copies of letters by Edward Herbert and H. Emerson; and a few poems. As the volume was at one time in the Powis Castle collection it is possible that the author of the treatise was a member of the Herbert family, possibly Edward, 3rd baron Herbert of Cherbury, grandson of Edward, 1st baron Herbert of Cherbury, the metaphysician, and that the poems may be attributed to one of the Herberts.