sir lancelot

[cfcbill]

15d very nationalitic person
21a directed towards core
27a with irregularly arranged fibres

I thank you

[Lie-in King]

15d Flag-waver
21a Inwardly
27a Cross-grained

Hi - please could you also post the number of letters & any you have placed, so that people without the puzzle can also help - thanks! :-))