Thank you for that useful link -you're a very honest person. I did get the st part but would never have thought of rich for rolling. That list must be getting quite long! I just don't like it when they don't answer a question when you're trying to help them. Ah well,it takes all sorts....
Hi - coming in rather late: yes, it's Maastricht, but as follows: endlessly dull is MAT (matt) all around ST (thoroughfare) and RICH ('rolling in it, wealth)