[Astromancer]

They made hempen cloth in ancient times, so hemp based paper makes sense. There are cultivers of hemp which are better for paper making, my hypothetical Cabalist might easily get seeds of the best cultivers of hemp brought to this parallel.

Remember, hemp isn't the only plant you can grow for paper that grows well in the Mediterranian basin. A world jumping Cabalist might seek out the optimun plant or plants and bring them to this parallel.