My name is connected with days of old

 

In time of King Arthur and Lancelot, bold.

 

My partener wore green and lived day to day

 

In a deep forest holding sheriff at bay. 

 

My name's called twice, one an unusual name.

 

But choose the second.  It will lead you to fame!

 

 

Who am I?

 

 

Whoever gets it right has to leave a poetic clue for next famous character

but this one is easy just to get us started,