I want to use the riven font commercially.
I can not find the royalty and copyright holder.
I do not know who made the riven, but I found it difficult to find it, but I do not have an answer.
The fact that we found out is only a registered font in 2005.
Does this riven font have a copyright holder? Or I want to know if it is commercially viable.

The copyright holder? Agfa-Monotype. In fact, you can find it listed inside the Riven font, along with the original font name.

Simpler to just buy a license for Perpetua
https://www.myfonts.com/fonts/mti/perpetua/