Athos was developed by Jaaacqs and Aethirium.  All textures from 1.2.5 and earlier are all the work of this team and I make no claim on their authorship. I have only created the textures for the subsequent MC releases. 

The original Athos post credits:
We have very similar patterns to Romecraft, so we'd like to give the creator some credit,  although everything you see in this pack is hand made and there is no recreation of any other pack. We'd also like to give credit to Lost valley and SMP revivals (glowstone Idea) because their nature blocks and wild life gave us many Ideas worth giving credit to.

Athos Roman directly used textures from Steelfeathers Lost Valley texture pack not just used the ideas.  I have sought and received premission from Steelfeathers to use her textures in Athos Roman as long as profit is not sought for her work.  Fully understandable if you ask me.

I will work hard to keep the excellent resource pack alive.
 - kyctarniq