Complex sentence: Around 1500, he had an outstanding reputation as an artist and was a wealthy citizen of Würzburg, owning a number of houses apart from being a landowner with his own vineyards.
Split into simpler sentences: Around 1500, he had an outstanding reputation as an artist and had become a wealthy Würzburg citizen. Not only did he own a number of houses but he also was a landowner with his own vineyards.