Godric vs. Markel

Hey everyone, I'd like some advice on tactics for playing as a Knight against the Necropolis faction. We're playing with a friend on the Empire map. It's version 3.1. We've been playing for about two months. On this map, the campaign heroes are available. This weekend, we played Faidaen (me) vs. Markel (him). Faidaen lost badly. In the near future, I plan to take revenge with Godric). I basically know the tactics – training more cavalry is key, but Markel is incredibly strong, so I'd like to ask for advice on what might help me against him?