Nothing in DT under 'Walter' could be the one noted above. I think it may be one I heard once (about 12-15 years ago) and recognized to be based on an anecdote about an affair between Sir Walter Raleigh and a Lady-in-Waiting to Queen Elizabeth, Elizabeth Throgmorton (in 1591 or 1592). It seems that many in London knew about the affair in the castle before the Queen heard of it, but when she learn of it she demanded that they get married. Which they did, and it seems to have been a very happy marriage until Raleigh was executed (about 26 years later). Swatter! Swatter ?