The Faithstone of Courage does not appear to have a deity restriction like the other ones do. I believe it should be Deity: Mithaniel Marr Lucy link without the restriction https://lucy.allakhazam.com/item.html?id=24446 EQ Traders link with it http://www.eqtraders.com/items/show_item.php?item=3961
I think it's intentionally that way to be inclusive of clerics following Erollisi Marr since both are worshipped at the Temple of Marr, but I don't see why they couldn't have included both deity restrictions in this case, as Scalp of the Ghoul Lord is an example of it being done. Will quote myself from the beta thread:
Thanks for providing that information but I find it strange that it is listed on eq traders with that restriction but not in game. It just seems strange that a few would be restricted but others would not as they could just make a single item for each class/zone they wanted without needing deity restrictions.
Hello! I see it as one of the perks of being an Human cleric; have two Faithstones. No reason to change it after 20 years!