That insight into the setter’s mind is much appreciated, Ifor. In this case, your choices, perhaps most clearly around the names from the misprints, were - if I may say so - masterly. And, yes, I was way out of my comfort zone and learned a great deal - even if I still don’t really understand the contribution of the last name. But I suspect that the person concerned didn’t either and wasn’t very troubled by the fact as long as the sums worked!