1) Who knows the name of the knight who carried the french king´s banner at crecy? And a description or even a photo of his coat of arms would be great!
2) Did every knight had someone who carried his banner or did some of them carried their banners themselves?

Hope someone could help me out :-)

The french kings Banner was the Oriflame , the usual Warbanner of french Kings btw .
At Crecy the only Information i found is this :

Dabei verloren auch die Bannerträger ihr Leben: bei Crécy 1346 war es Guy de la Trémoille .

Second Part is not so easy to answer , first you have to explain a Banner at all ....
Not every Knight was allowed to carry a " Banner " , Heraldy , Shape and Size of a " Banner " was ruled .
And my english is too bad to explain that accurate .
Ask Steven , he is a Reenactor and knows a lot , and i think his english is much better .

http://de.wikipedia.org/wiki/Haus_La_Tr%C3%A9moille

Kannst es mir auch auf deutsch erklären... aber da das hier kein deutsches Forum ist bleiben wir beim englischen: I didn´t meant the Oriflamme, i meant the blue banner with the golden fleurs de lis on it. I found a great heraldry site but there isn´t the standardbearer of the king: www.krigsspil.dk (go to "Downloads" and then to "HYW")

I would think the french King would have had one personal Banner ....

Maybe ask Fuhrmann , he makes the Rofu Flags .

Finally I found him in a book...Miles de Noyers carried the king´s banner.

It´s a golden eagle on blue ground. It is shown on krigsspil.dk (the link above) but there is a mistake: They wrote that he carried the oriflamme, but this was Guy de la Tremoille. I´ve found this out because of an Osprey book...

Here he is... I don´t really like the banner-holding hand, so I think about remaking it...