Yup. For Solak.
For the Elven brothers and sisters I pulled slight imaginations/variations from Tolkiens Sindarin elven language based off their relationships with each other and powers they possessed as children. All four of them being able to twist and control nature leads to a lot of the naming;
Erethdor - Seed (eredh) + Brother (tôr) (First born brother)
Meretheil - Rose (meril) + Sister (thêl) (explained in quest about her birth and a prophecy)
Saeldor - Wise (sael) Brother (tôr) (Wisdom)
Faerdhinen - Silent Spirit (faer+dínen) (ability to control animals through spirit magic)
I REALLY want to explain all this on a quest I've designed but don't have the spare time to bring it to light.