I am looking for sources to purchase a replica of a sword that might have been used in the Aragon region of Spain during the mid-1300s.

Are you looking for an original Aragonese sword - one found in a church or tomb - that you can have replicated? Are you looking for a production sword?

First, Medieval sword types are not tied to locality. A sword could be made in Germany and then used anywhere in Europe.

The year 1350 will determine your choice. It is a transitional time, with some Oakeshott types going out of fashion, and others just coming in.

Look Here to find a type current to 1350 that appeals to you.

This article's scope ends in the XIIIth century, but maybe is of your interest...
http://gladius.revistas.csic.es/index.php/gla...le/138/138