Morifinwë

Morifinwë was the father-name of Caranthir, the fourth son of Fëanor. It means "Dark Finwë", a reference to his dark hair. The Quenya word was formed using the noun mórë, meaning "blackness" or "dark", which became mori- when added to his grandfather's name, Finwë.

References

• The Peoples of Middle-earth, The Shibboleth of Feanor