Albrecht —, painter and engraver regarded as the greatest artist of the German renaissance (5)
I believe the answer is:
durer
(Other definitions for durer that I've seen before include "C Fifteenth-Sixteenth German painter/engraver" , "Renaissance painter" , "Albrecht -, C15-16 German artist" , "Albrecht -, fifteenth to sixteenth century German artist" , "Albrecht --, German painter and engraver" .)