Nyonia - Pauci Fortis
A very old man
Heldir appears to be a 70 year old man, although he is quite spry for his age.
Heldir has been alive a long time. He has been experimenting with plants and animals to develop a longevity serum. He has something that works well enough to keep him from aging past his current age of 70 years old. His actual age is closer to 430 years old.