The House of Feänor (Q."Nossë Faënáro"; S."Nos Feänor") or Feänorians were the seven Sons of Feänor and their followers.They represented the major tribe of the Etyangoldi or Noldorin Exiles while the House of Fingolfin, although by far larger in number, were second in royal line.
Language
In Daily use these Noldor adapted Sindarin, which evolved into a Noldoric-Sindarin or Golodhrin (Goldogrin) dialect, but while the House of Feanor spoke an accented North-Sindarin (Mithrimin), the Noldoric-Sindarin of the Fingolfinians was more of an adapted West Sindarin.