I am still struggling big time with this. I have all the answers apart from 13 across (I imagine a pie's OK, upsetting the rule - 6) but the only word I can think of with the pattern I have would make a nonsense of what I have for 7, 8 and 14 down and I am sure I have the right words there. After that there is the not inconsiderable problem of working out how to represent the two discoveries and finding the two letters which need changing, My initial thought was that one is the first letter of 35 across which would give a surname but if that is the case I can't see the forename. Any pointers in the right direction would be really appreciated. Back now to reading about the person generated by the extra letters and what I think he was referring to.