Not obvious, but then it shouldn't be, should it?

Clever - not as hard as it first felt but still took some thought :)

Very neat grid :)

Mixing first and second names?

@Finn, and? Is this not permitted?

Quite good. Pretty easy to solve, even with the mixing of surnames and given names in one group (I know there's no rule, but it feels clunky, and a bit lame - I think , because if three of the four in that group weren't obvious, it could have made it impossible to sort). Kind of fun. Thanks.