[Morrigoon]

I think a lot of the protestant faiths recognize that the catholic church was the church established by Jesus, however, they felt that the original church had "lost its way" and so they started the new church to bring things closer to what they believed was intended. So as far as "true" church... well, it's sorta like a member of the nobility that has two sons. Firstborn son inherits the estate, even if Son #2 looks and acts a lot more like dad.

I'm not suggesting the validity or lack thereof of any claims, just explaining a position they may hold.