Yeah but in their development diary they stated that "Tentatively, we’re looking to roll the Beta program out in stages. The first stage will target the newer, more powerful iOS devices as we’ve already got a pretty stable version up and running. The subsequent stages will open the program up to some of the older devices that some of you may be using to play the game currently. Celtic Heroes is a pretty resource intensive game so we have to do some heavy optimisation to get it running on devices like the 3rd gen iPhone and iPad one."
But the highest system update on iPad 1 is 5.1.1 so that is well under ios 7.
The one and only Cyrux, The Great and Powerful.
Cyrux: Level 210+ Ranger
Zyair: Level 91+ Mage