A notebook containing an analysis, in the form of questions and answers, of John Wilkins, Of the Principles and Duties of Natural Religion (London, 1675, Wing W2204), in the hand of Robert Godolphin Owen, son of William Owen of Brogyntyn (pp. 1-28). It was probably compiled by him whilst he was a student at Oriel College, Oxford (see Brogyntyn MS II.25): 'An Abridgement of Wilkin's [sic] Natural Religion' (First line, 'Q. What is treated in the first Book? ...'; last line, '… for tho' it may not be an immediate Revelation, yet we are sure it is warranted by God').