This question comes from the story "The Interlopers" by Saki.
Due to their families’ longtime feud, they both consider each other enemies and trespassers.
They were once friends, but after inheriting their families’ squabbles they have turned against one another.
Their families always thought each saw the other as an enemy, though they both privately want to end the feud.
Though Georg accepts Ulrich is the forest's legal property owner, he continues to poach anyway, making himself a nuisance for Ulrich.