My father passed away approximately ten years ago. Unbeknownst to me he had left me some money which my uncle kept from me.

Probably.  First, in some cases the statute of limitations doesn't begin to run until the injured person discovers or should reasonably have discovered the wrongdoing.  I don't know whether this is the case for this claim in AR.  Second, your uncle may be viewed as a fiduciary to you, which could (again don't know the law in AR) be another reason to toll the limitations period.  BTW, from what you've written, I'm guessing that  your uncle may have been the executor of your father's estate, which would make him a fiduciary even if you weren't related.