Johannes Strabo is a human author. He is known for having written 'A New Atlas for the Ninth Age".
Strabo as a narrator
Strabo is used as a narrator in T9A:FB Rulebook, where an extract from his work 'A New Atlas for the Ninth Age' is presented. The extract is well written and describes in broad strokes the geography of the world. Much of it is reaffirmed in other sources. The extract is undated though and doesn't mention much that helps gauge its age.