The history of Henry VIII's first ‘divorce’, a topic of so many implications, naturally has mysteries to be solved. Further study of contemporary documents can be expected to clarify much that still tantalizes us. Yet there is another aspect of the subject of Henry's marital status which has hardly been investigated, namely the state of the law on Henry's capacity to act if he were really incestuously married. If it were a fact that he was incestuously married, it must needs follow that he lacked some of the powers he would have had if he were not subject to this disability: and this is a fact of which his advisers will have taken notice. To bring legal material bearing on this aspect of the problem back into light may help to clear up one of the mysteries, namely how we are to explain the king's ambiguous attitude towards his marriage between the years 1525 and 1527.